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Applied Research in Science and Technology
Published by Research and Social Study Institute
ISSN : 27767213     EISSN : 27767205     DOI : -
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Environmental Science
Applied Research in Science and Technology is a peer-reviewed open-access journal which publishes result from scientists and engineers in many fields of science and technology. Every submitted manuscript will be reviewed by at least two peer-reviewers using the double-blind review method. focus and scope: Infrastructures Technology, Remote Sensing and Geospatial Information System, Soil Science, Geology, Marine Science, Technology and Engineering, Electrical, Biomedical Engineering, Renewable Energy, Physics, Chemistry, Materials, Biology, Forestry, Agriculture, Earth & Space Science.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 47 Documents
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Economic Evaluation Analysis of PEGylated Poly(amidoamine) Dendrimer Production by Divergent Synthesis Method Veronica, Jessica; Nandiyanto, Asep Bayu Dani
Applied Research in Science and Technology Vol. 3 No. 1 (2023): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v3i1.44

Abstract

The purpose of this study is to evaluate the viability of a large-scale divergent growth synthesis PEGylated dendrimer poly(amidoamine) (PAMAM) production project. Engineering and economic evaluations were used to determine the results of this feasibility study. Engineering evaluation is based on a review of the initial plant design and stoichiometry calculations. While a number of factors, including the payback period, gross profit margin, cumulative net present value, etc., are used to evaluate the economic evaluation. The results of this analysis confirm that PEGylated PAMAM dendrimer may be produced on an industrial scale. In this project, 250 grams of PEGylated PAMAM dendrimer was obtained per cycle and the total profit earned was USD 4,656,187,677.16 in 20 years. Payback Period analysis shows that the investment will be profitable after more than two years. To ensure project feasibility, projects are estimated from ideal to worst conditions in production, including salaries, sales, raw materials, utilities, and external conditions such as taxes.
Analysis of the Application of the Virginia Solid Waste Management Hierarchy Concept on Urban Waste Management in Cirebon City, Indonesia Juliarba, Muhammad; Kurniasari, Opy
Applied Research in Science and Technology Vol. 4 No. 1 (2024): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v4i1.55

Abstract

Effective and sustainable waste management is a challenge faced by many cities worldwide, including Cirebon City. This study aims to analyze the effectiveness and sustainability of waste management strategies in Cirebon City using the Virginia Solid Waste Management Hierarchy Concept as the primary reference. The method consisted of field surveys, interviews with relevant stakeholders, and collection of secondary data regarding waste management in Cirebon City. Additionally, the Delphi method was employed to collect opinions and perspectives from a panel of experts and stakeholders regarding waste management strategies and programs. The analysis results of Delphi method reveal that short-term and medium-term programs will focus on socialization and study activities, then in the long-term program, strict regulations and incinerator construction will begin to be implemented. Based on the results of Simple Additive Weighting (SAW) analysis, which compared the implementation value of the Virginia Solid Waste Management Hierarchy Concept with that of the existing management concept, it is revealed that the implementation value of the Virginia Solid Waste Management Hierarchy Concept is greater, namely 2.15, thus demonstrating the potential for its application in waste management in Cirebon City.
Characterization of Fly Ash from Coal-fired Steam Power Plant Tarahan, Lampung, and Its Potential as a Soil Amendment Mutaqin, Adiksa Insan; Chaerul, Mochammad
Applied Research in Science and Technology Vol. 5 No. 2 (2025): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v5i2.80

Abstract

Background: Fly ash, a byproduct of coal combustion in steam power plants, has significant potential for utilization, particularly as a soil amendment. However, in Indonesia, including at the Tarahan coal-fired steam power plant (PLTU Tarahan), most fly ash remains underutilized and is primarily disposed of in landfills.Aims: This study aimed to analyze the characteristics of fly ash produced at PLTU Tarahan and evaluate its potential for recycling through three utilization pathways: biosilica production, application as a soil-stabilizing agent, and incorporation into compost mixtures.Methods: Samples were collected from three distinct locations and analyzed at a certified laboratory using standardized procedures. The resulting data were subsequently compared with values reported in existing literature and interpreted using a descriptive analytical approach.Result: Characterization results indicated that the fly ash belongs to Class F, with high silica (SiO₂) content and low calcium oxide (CaO), making it pozzolanic but non-cementitious. Each reuse pathway was assessed in terms of technical compatibility, infrastructure readiness, pretreatment requirements, market potential, and environmental risk mitigation. The findings showed that biosilica production offers high added value but requires advanced chemical extraction technology. Soil stabilization using fly ash and lime is technically feasible for internal infrastructure and land reclamation projects, offering immediate benefits with minimal pretreatment. When mixed with organic materials such as press mud or combined with garbage enzyme, fly ash also enhances compost maturity, nutrient content, and enzymatic activity. Based on these results, a phased implementation strategy is recommended, beginning with applications that are low-risk and compatible with existing infrastructure. These findings contribute to the development of more adaptive and sustainable fly ash management strategies within coal-fired power plants. To support practical implementation, further laboratory- and field-scale studies are needed to validate long-term performance. Additionally, future research should incorporate multicriteria decision-making approaches, such as the Analytic Network Process (ANP), to comprehensively evaluate technical, environmental, social, and economic factors in selecting the most appropriate utilization pathway.
Sub-Watershed Prioritization for Sustainable Sediment Management in the Upper Cisokan Hydropower Catchment Using SWAT+ Pusparinda, Laella; Mariana Marselina
Applied Research in Science and Technology Vol. 5 No. 2 (2025): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v5i2.85

Abstract

Background: Sedimentation poses a critical threat to hydropower sustainability, particularly in pumped storage systems such as the Upper Cisokan Pumped Storage (UCPS) plant in West Java, Indonesia.Aims and Methods: This study assesses the spatio-temporal dynamics of sediment yield in the Cisokan Watershed using the SWAT+ model, incorporating historical simulations (2013 and 2023) and a 2038 projection under a Business-As-Usual (BAU) scenario developed through supervised classification in Google Earth Engine (GEE).Result: Model calibration based on observed discharge data yielded satisfactory results (NSE = 0.80 in 2013, 0.65 in 2023), validating its suitability for sediment analysis. Results reveal a nearly fourfold increase in average sediment yield from 0.61 to 2.25 tons/ha/year between 2013 and 2023, with a projected rise to 5.57 tons/ha/year by 2038. A composite prioritization index, integrating current sediment output, decadal change, and sub-watershed area, identified SW-23, SW-16, and SW-5 as the highest priority areas for erosion mitigation. These findings were validated against future projections, confirming their persistent erosion risk. The study emphasizes the importance of scenario-based watershed planning in safeguarding hydropower infrastructure. By integrating sediment modeling with scenario-based land use projection via supervised classification in Google Earth Engine (GEE), this study provides a replicable framework for proactive watershed management and hydropower sustainability planning.
Evaluation and Ranking of Urban Drainage Systems Using SAW, TOPSIS, and VIKOR Methods: A Case Study in Bantul Regency Arifin, Muhamad; Winarno, Setya; Kusumadewi, Sri
Applied Research in Science and Technology Vol. 5 No. 2 (2025): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v5i2.103

Abstract

Background: Urban flooding and waterlogging in Bantul Regency stem from inadequate drainage systems, exacerbated by rapid urbanization, land use changes, poor infrastructure planning, and intensified rainfall due to climate change. Therefore, an integrated risk management approach compassing both structural and non-structural solutions—is crucial for improving urban drainage resilience. Conversely, the comprehensive evaluation of drainage system performance continues to pose considerable challenges. Assessments that concentrate solely on hydraulic or technical parameters while neglecting environmental, social, and economic factors—often result in suboptimal or misdirected decisions. As such, adopting a more integrative approach through multi-criteria decision-making methods, such as Multi-Attribute Decision Making (MADM), emerges as a pertinent alternative.Aims and Methods: The methods employed for MADM analysis in this study include the Simple Additive Weighting (SAW), the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS), and the Vlse Kriterijumska Optimizacija I Kompromisno Resenje (VIKOR). Each of these approaches is designed to accommodate different data characteristics, levels of analytical complexity required, degrees of uncertainty involved, computational load, and the decision maker’s experience or expertise in applying the respective method.Results: The analysis results indicate that, based on the SAW method, location A11 obtained the highest score (0.8637), signifying the poorest drainage system performance and thus requiring top-priority intervention, whereas location A77 achieved the lowest score (0.3132), indicating a well-functioning drainage condition. Using TOPSIS, location A9 ranked first with a preference value (Vi) of 0.7498, reflecting significant proximity to the ideal solution, while A6 recorded the lowest score (0.2152). Meanwhile, the VIKOR method identified location A99 as the top-ranked alternative with a VIKOR index of 16.5321, while A1 emerged as the lowest-ranked alternative with a VIKOR index of 0.0188.
Quality and Resilience of Subsidized Housing for Low-Income Communities in Disaster Prone Zone of Padang City: An Analysis of Residents' Perceptions Syafri, Yuni Purnama; Furqani, Fahma; Octavia, Dyla Midya; Yunas, Barkhia; Zayu, Wiwin Putri
Applied Research in Science and Technology Vol. 5 No. 2 (2025): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v5i2.114

Abstract

Background: Subsidized housing for Low-Income Communities (LIC) in Indonesia continues to encounter significant quality challenges, particularly in disaster-prone regions. These challenges are primarily associated with the limited enforcement of technical standards, insufficient infrastructure provision, and inadequate policy support, which collectively undermine the resilience and habitability of such housing.Aims and Methods: This study analyzes the quality and resilience of subsidized housing for LIC in Padang City, which are in disaster-prone zones. Using questionnaire survey methods and factor analysis, this study identified technical and non-technical variables that affect the feasibility of housing. The KMO-Bartlett test, validity, and reliability ensured the instrument's feasibility, resulting in 18 valid variables grouped into four main factors: the quality of infrastructure, facilities, and public utilities (IFP), housing development policies and support, technical quality and housing standards, and residential accessibility.Result: The study results show that basic infrastructure, regulatory support, implementation of technical standards, and strategic location have a significant role in the quality of subsidized housing. These findings confirm the importance of synergy between technical and policy aspects in improving the quality and resilience of subsidized housing, especially in disaster-risk areas.
Micro Irrigation and NPK Fertilization to Improve Nutrient Uptake and Flavonoid of Shallot in Karst Land Nana, Fransiska Maria Aprilya; Murtiningrum; Zaki , Muhamad Khoiru; Ximenis, Virgolie Diknas; Ngadisih; Maftukhah, Rizki; Fahima, Sahidatun
Applied Research in Science and Technology Vol. 5 No. 2 (2025): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v5i2.115

Abstract

Background: Water and nutrient limitations in karst soils hinder the optimal growth of shallots, so water and nutrient management is carried out using variations in micro-irrigation and NPK fertilization. Variations in micro-irrigation and NPK fertilization can support the growth and flavonoid content of shallots.Aims: This study aims to analyze nutrient uptake and total flavonoid production of shallots in karst soils with variations in micro-irrigation and NPK fertilization.Methods: The research used a Randomized Block Design (RBD) containing two main factors. The first factor was the irrigation technique, consisting drip irrigation (I1) and mist irrigation (I2). The second factor was the NPK fertilizer dosage, consisting three levels: 0 kg/ha (N1), 500 kg/ha (N2), and 1000 kg/ha (N3). The parameters observed included soil moisture, soil NPK availability, plant NPK uptake, total flavonoids, growth, and shallot yield.Results: The results showed that mist irrigation with an NPK dose of 1000 kg/ha yielded higher results compared to drip irrigation in terms of soil moisture, NPK availability and uptake, growth, and yield. The highest availability of nitrogen, phosphorus, and potassium in mist irrigation with a dose of 1000 kg/ha was 0.36%, 89.20 ppm, and 0.66 me%, respectively. Phosphorus uptake in mist irrigation was higher than in drip irrigation, at 0.81% and 0.89%, respectively. Growth and yield under mist irrigation with an NPK dose of 1000 kg/ha also yielded the best results compared to drip irrigation with an NPK dose of 1000 kg/ha, namely plant height (30.69 and 29.74 cm), number of leaves (27.65 and 25.77 leaves), and bulb diameter (30.07 and 27.02 mm). The highest total flavonoid content was observed in drip irrigation with a 500 kg/ha dose compared to mist irrigation with a 500 kg/ha dose, namely (78.83 and 50.96 mg/kg). Overall, irrigation techniques with varying NPK doses were able to increase nutrient and flavonoid uptake in shallot on karst land.

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