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Disna Yosita; Indah Woro Utami; Nishia Waya Meray

DIAGNOSA: Jurnal Ilmu Kesehatan dan Keperawatan 2025 International Forum of Researchers and Lecturers

Enteric bacterial infectious diseases such as Escherichia coli are still a serious health problem in many countries, mainly due to the increasing cases of antibiotic resistance that cause the effectiveness of conventional therapies to decline. This condition encourages the search for safer and more effective natural alternatives, one of which is propolis produced by the Trigona sp. bee Trigona sp. Propolis is known to contain a variety of bioactive compounds, including flavonoids and phenolic acid, which act as antimicrobials. This study aims to test the antibacterial activity of propolis extract against E. coli by the sumpray diffusion method. The results of the study showed that there was an inhibition zone that varied according to the concentration of the extract. At a concentration of 10%, an average inhibition zone of 19.85 mm (strong category), a 20% concentration of 22.35 mm (very strong), and a concentration of 30% reaches 26.62 mm (very strong). In comparison, the positive control of ciprofloxacin produced 21.25 mm of resistance, while the negative control (DMSO) showed no activity. ANOVA analysis confirmed significant differences between treatments (p < 0.05). These findings confirm that propolis extract has the potential to be developed as an effective natural antimicrobial agent.

Hendrig Sudradjat; Widha ardhiansyah; Putri Fatmawati

Jurnal Riset Rumpun Ilmu Teknik 2025 Pusat riset dan Inovasi Nasional

Indonesia, a country located in the Pacific Ring of Fire, has a high level of vulnerability to earthquakes. This condition demands an increase in the capacity of civil engineering human resources to design safe and disaster-resistant buildings. This study aims to evaluate the effectiveness of project-based learning training with a focus on the application of SNI 1726:2019, structural modeling using ETABS/RSA, lateral load calculations, and the design of simple earthquake-resistant houses. The research method involved final-year civil engineering students and alumni who participated in a series of trainings, with evaluations through pre-tests, post-tests, and design assessments. The results showed an increase in competency in all aspects, especially the understanding of the SNI 1726:2019 standard and lateral load calculations. In addition, participants were able to produce simple house designs that meet the basic criteria for earthquake resistance, material efficiency, and structural stability. These findings indicate that applied training can bridge the gap between academic theory and practical skills needed in the workplace. This research contributes to strengthening the capacity of civil engineering in supporting resilient infrastructure development and has important implications for the integration of similar training into higher education curricula and community service programs.

Assyifa, Cut Fatima; Franella, Intan Ade; Halqiah, Fanny; Sulaiman, Ismail; Yunita, Dewi

JITIPARI (Jurnal Ilmiah Teknologi dan Industri Pangan UNISRI) 2025 Universitas Slamet Riyadi Surakarta

Chicken and processed products like dimsum are susceptible to rapid spoilage due to their high water and nutrient content. This makes it difficult for consumers to directly assess a packaged product's freshness. To address this, a novel smart packaging solution using a biodegradable film infused with anthocyanin extract from butterfly pea flowers (Clitoria ternatea) as a visual freshness indicator was developed. The primary objective of this research was to evaluate the effect of three different anthocyanin concentrations (3%, 5%, and 7%) on the film's physical properties and its ability to change color in response to spoilage over a three-day storage period. The research results showed that the film with a 7% anthocyanin concentration had the best physical properties, with a thickness of 0.092 mm, a tensile strength of 8.66 MPa, 14.99% elongation, 62.59% water resistance, and 100% biodegradation. The anthocyanins successfully changed color in response to the freshness level of both chicken meat and dimsum throughout the storage period.

Iklila Zahra; Ismi Nur Alviani; Nasruhan Arifianto; Chairunisa Ayu Saputri

Jurnal Kemitraan Masyarakat 2025 Lembaga Pengembangan Kinerja Dosen

Acne vulgaris is one of the most prevalent dermatological disorders in Indonesia, often affecting adolescents and young adults. This condition not only causes visible skin lesions but also has a profound impact on psychological well-being, leading to decreased confidence and reduced quality of life. Effective management of acne vulgaris requires consistent use of prescribed medications, with doxycycline being one of the commonly recommended systemic antibiotics. This study aimed to evaluate the level of patient adherence to doxycycline therapy for acne vulgaris at Roels Clinic, Ponorogo, during the period of March to April 2025, and to identify factors that may influence this adherence. A descriptive research design was utilized, employing a structured questionnaire distributed to patients who met specific inclusion criteria. The adherence level was assessed using a 5-point Likert scale, and the average percentage was computed and classified into compliance categories. The findings revealed that among 50 respondents, 70.6% demonstrated a “fairly high” level of adherence to doxycycline treatment. These results suggest that most patients follow the prescribed regimen appropriately. High adherence is expected to improve therapeutic outcomes, accelerate recovery, and minimize the potential for antibiotic resistance, which remains a growing concern in dermatological and public health settings.

Fajrin Afandi; Natasya Salsa Sabila; Nadia Khumairoh; Mu’alimin Mu’alimin

Jurnal Manajemen dan Pendidikan Agama Islam 2025 Asosiasi Riset Pendidikan Agama dan Filsafat Indonesia

Quality culture in educational institutions has become a strategic issue to improve learning service quality and school accountability. However, its implementation still faces challenges such as limited human resources, resistance to change, and weak sustainable quality management strategies. This study aims to answer the question: how are the implementation strategies and supporting factors in strengthening quality culture within educational institutions based on previous research findings? This study employs a Literature Review (LR) method by collecting scientific articles from Google Scholar and Publish or Perish (PoP) using the keyword “budaya mutu” (quality culture) with a publication range from 2020 to 2025. From a total of 30 identified articles, a screening and eligibility process was conducted, resulting in 5 main articles analyzed thematically. The synthesis reveals three key themes: (1) the role of leadership and Total Quality Management (TQM) in reinforcing quality culture, (2) the application of the PPEPP/MBBS cycle for sustainable educational quality, and (3) supporting factors and challenges in developing a culture of quality. In conclusion, strengthening quality culture requires effective leadership, systematic management strategies, and cross-sector collaboration; future research is encouraged to develop field-based intervention models to test the effectiveness of quality culture strategies.

Lestari, Venty

Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri 2025 Asosiasi Riset Ilmu Teknik Indonesia

Al–Mg–Si aluminum alloys are widely utilized in engineering applications due to their low density, excellent corrosion resistance, and mechanical properties that can be modified through heat treatment. This study investigates the effect of homogenization on the microstructure and hardness of Al–Mg–Si alloys produced by the squeeze casting process. The experimental procedure involved alloy melting, squeeze casting at 76 MPa using preheated metal molds, followed by homogenization at 400 °C for 4 hours. Microstructural characterization was performed using optical microscopy to examine the dendritic morphology and measure the secondary dendrite arm spacing (SDAS). Mechanical properties were evaluated through Vickers microhardness and Rockwell macrohardness testing. The results show that homogenization increases the SDAS from 32.59 μm to 36.88 μm and decreases the volume fraction of interdendritic phases from 15.51% to 13.57%. Furthermore, microhardness decreased from 50.22 VHN to 38.58 VHN, while macrohardness decreased from 54.60 HRE to 46.64 HRE. These reductions are attributed to the partial dissolution of Mg₂Si precipitates into the aluminum matrix during homogenization. Overall, this research provides valuable insight into the optimization of initial heat treatment parameters for Al–Mg–Si alloys produced by squeeze casting. The findings highlight the role of homogenization in improving microstructural uniformity and preparing the alloy for subsequent deformation processes such as cold rolling and extrusion, particularly for structural components used in mining and heavy transportation industries.

Muthia Adlina; Indah Woro Utami; Nishia Waya Meray

Jurnal Rumpun Ilmu Kesehatan 2025 Pusat Riset dan Inovasi Nasional

Fungal infections are a common health problem in tropical regions, including Indonesia, since humid conditions support microbial growth. Candida tropicalis is a pathogenic species frequently identified as the cause of both superficial and systemic candidiasis. The rising resistance to synthetic antifungal agents such as fluconazole and ketoconazole highlights the need for safer and more effective alternative therapies. Propolis, a resinous substance produced by Trigona sp. bees from various plant sources, contains flavonoids, phenolics, and terpenoids with important biological activities, including antimicrobial and antifungal effects. This study aimed to evaluate the effectiveness of ethanol extract of propolis from Balikpapan against the growth of Candida tropicalis using the disk diffusion method. Phytochemical screening revealed the presence of alkaloids, flavonoids, phenolics, tannins, and terpenoids in the extract. Antifungal activity testing showed that concentrations of 80%, 90%, and 100% significantly inhibited fungal growth, with the largest inhibition zone of 27.93 mm observed at 100% concentration. Statistical analysis using ANOVA confirmed significant differences among treatments. Thus, ethanol extract of Trigona sp. propolis from Balikpapan demonstrates strong potential as a natural antifungal agent. These findings support the use of propolis as a natural-based therapeutic alternative for fungal infections and contribute to the development of herbal pharmaceutical products.

Fadlur Rochman Irgi Feriawan

Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil 2025 Asosiasi Riset Ilmu Teknik Indonesia

The rapid advancement of science and technology requires universities to provide safe, comfortable, and representative learning facilities. One such initiative is the construction of a five-story lecture building at Dr. Soetomo University, designed with a steel structure as an alternative to reinforced concrete. Steel was chosen due to its high tensile strength, uniform material properties, lighter weight, ease of installation, and strong resistance to earthquake loads. This study aims to design a five-story lecture building with a steel structure that meets the requirements of strength, stability, and safety in accordance with applicable standards. The method applied is structural planning based on SNI 1729:2020, SNI 1727:2020, and SNI 1726:2019 using the Load and Resistance Factor Design (LRFD) approach. Structural analysis was conducted with SAP2000 version 2014 through three-dimensional modeling that considers geometry, material properties, loading, and placement. The results show that the selected steel profiles for beams, columns, and connections are capable of supporting the combination of dead loads, live loads, and seismic loads with safe performance. The maximum stress remains below the allowable limit, and the deflection values do not exceed the permitted deviation. These findings confirm that steel provides efficiency in dimensions and materials while offering practicality and earthquake resistance, and the design produced can serve as a useful reference for future multi-story building projects in earthquake-prone regions.

Sarah Dzakirah; Ida Rahmah Burhan; Husni Husni

Inovasi Kesehatan Global 2025 Lembaga Pengembangan Kinerja Dosen

The elderly is among the most vulnerable groups in society due to progressive biological decline that weakens physical resistance, making them prone to chronic diseases such as hypertension. Hypertension is one of the most common multifactorial disorders in older adults, and its severity may be influenced by anxiety, which stimulates the sympathetic nervous system and increases blood pressure. This study aimed to examine the relationship between anxiety levels and hypertension among the elderly in the working area of Andalas Health Center, Padang City. An analytic study with a cross-sectional design was conducted involving 81 elderly participants diagnosed with hypertension, selected through accidental sampling based on inclusion and exclusion criteria. The Geriatric Anxiety Scale (GAS) was employed as the research instrument, while data analysis used the Chi-square test. Results showed that the majority of respondents experienced mild anxiety (67 respondents, 82.7%) and uncontrolled hypertension (54 respondents, 66.6%). Statistical analysis revealed a p-value of 0.534, indicating no significant association between anxiety levels and hypertension in the elderly population studied. These findings are consistent with several previous studies reporting that the relationship between anxiety and blood pressure in the elderly is often inconsistent, largely due to other risk factors including age, gender, low physical activity, comorbidities, and poor adherence to antihypertensive treatment. The implication of this study highlights the necessity of a holistic approach to hypertension management in the elderly, addressing not only psychological aspects but also lifestyle modification, treatment adherence education, and strengthening public health programs. Therefore, this research is expected to serve as input for health workers at community health centers to improve strategies for preventing and controlling hypertension in elderly populations.

Muhammad Syifa Albi Nasution; Noviana Zara

Inovasi Kesehatan Global 2025 Lembaga Pengembangan Kinerja Dosen

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder whose prevalence continues to rise, making it a major challenge for health systems worldwide. This disease results from a combination of insulin resistance and impaired pancreatic β-cell function, leading to persistent hyperglycemia and increased risk of long-term complications affecting the kidneys, cardiovascular system, nervous system, and eyes. This report describes the case of a 52-year-old woman diagnosed with T2DM for approximately ten years. The patient presented with fatigue, nocturnal polyuria, nausea after meals, significant weight loss, and tingling in her extremities. Laboratory findings revealed an HbA1c level of 12%, reflecting very poor glycemic control. A family medicine approach was applied through detailed history taking, physical and laboratory examinations, home visits, and completion of a family folder to assess clinical, personal, social, and functional aspects. Interventions included counseling on balanced diet, encouragement of regular physical activity, education on diabetic foot care, and pharmacological treatment with metformin and insulin. The family received counseling about hereditary risk factors, the importance of emotional support, and the need for consistent monitoring of health status. The patient was still capable of light daily activities, supported by a highly functional family environment with an APGAR score of 10. A holistic family medicine–based approach was shown to improve treatment adherence, patient knowledge, and overall quality of life. Therefore, management of T2DM requires a comprehensive strategy that integrates promotive, preventive, curative, and rehabilitative components, emphasizing the active involvement of family and community at the primary care level to reduce complications, slow disease progression, and enhance patient well-being.   Keywords: Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder whose prevalence continues to rise, making it a major challenge for health systems worldwide. This disease results from a combination of insulin resistance and impaired pancreatic β-cell function, leading to persistent hyperglycemia and increased risk of long-term complications affecting the kidneys, cardiovascular system, nervous system, and eyes. This report describes the case of a 52-year-old woman diagnosed with T2DM for approximately ten years. The patient presented with fatigue, nocturnal polyuria, nausea after meals, significant weight loss, and tingling in her extremities. Laboratory findings revealed an HbA1c level of 12%, reflecting very poor glycemic control. A family medicine approach was applied through detailed history taking, physical and laboratory examinations, home visits, and completion of a family folder to assess clinical, personal, social, and functional aspects. Interventions included counseling on balanced diet, encouragement of regular physical activity, education on diabetic foot care, and pharmacological treatment with metformin and insulin. The family received counseling about hereditary risk factors, the importance of emotional support, and the need for consistent monitoring of health status. The patient was still capable of light daily activities, supported by a highly functional family environment with an APGAR score of 10. A holistic family medicine–based approach was shown to improve treatment adherence, patient knowledge, and overall quality of life. Therefore, management of T2DM requires a comprehensive strategy that integrates promotive, preventive, curative, and rehabilitative components, emphasizing the active involvement of family and community at the primary care level to reduce complications, slow disease progression, and enhance patient well-being.

Theresa Juliarta Br Sijabat , Fannysia; Mardhiyah, Ainun; Marakali Siregar, Onan

Jurnal Manajemen Kreatif dan Inovasi 2025 International Forum of Researchers and Lecturers

The growth of coffee consumption in Indonesia presents challenges for Kopi Kenangan in maintaining customer loyalty amidst the increasingly competitive beverage industry. This study aims to analyze the influence of service quality and product quality on customer loyalty at Kopi Kenangan, Ruko Sultan Hasanuddin, Binjai City, both partially and simultaneously. The research employed an associative quantitative approach with 96 respondents selected through incidental sampling. The research instrument was a questionnaire designed with indicators representing the dimensions of service quality and product quality. The data were analyzed using multiple linear regression, partial tests (t-test), simultaneous tests (F-test), and determination tests to identify the contribution of independent variables to the dependent variable. The findings reveal that service quality and product quality have a positive and significant effect on customer loyalty. For service quality, the tangible indicators, such as store comfort and adequate facilities, are dominant factors that enhance customer satisfaction. Meanwhile, for product quality, the performance indicators, including coffee taste and product consistency, play a crucial role in fostering customer loyalty. Loyalty is reflected in repeated purchases, brand commitment, and resistance to competitor products. Nevertheless, the study also indicates that menu variation has not fully encouraged repeat purchases, highlighting the need for greater product innovation. Recommendations include improving store environment comfort, providing staff training for optimal service delivery, ensuring taste and quality consistency, developing product design innovation, and implementing experience-based marketing strategies along with loyalty programs. These efforts are expected to strengthen emotional bonds and enhance Kopi Kenangan’s competitiveness in the long term.

Ringgit Purbowati; Sovian Aritonang

Jurnal Riset Rumpun Ilmu Pendidikan 2025 Lembaga Pengembangan Kinerja Dosen

This study was conducted to examine the effectiveness of Kevlar as a structural material in Medium Altitude Long Endurance (MALE) Unmanned Aerial Vehicles (UAVs), particularly those designed with winglet innovations. In UAV development, material selection plays a crucial role since it directly affects flight performance, fuel efficiency, and the overall durability of the aircraft structure. Kevlar is widely recognized as a lightweight yet highly durable material, making it an interesting candidate to replace more conventional options such as aluminum and carbon fiber composites. Two approaches were applied in this research: numerical simulations using aerodynamic software and experimental testing on a prototype wing and winglet reinforced with Kevlar. The analysis focused on comparing lift, drag, total aircraft weight, and fuel consumption between Kevlar-based structures and conventional materials. The results demonstrate that Kevlar significantly improves aerodynamic efficiency and extends flight endurance due to its lower weight. Moreover, Kevlar exhibits superior resistance to dynamic loads and impacts, which are critical during certain flight conditions. However, challenges remain in terms of higher production costs and more complex manufacturing processes compared to traditional materials. Despite these limitations, the findings provide valuable insights for developing more efficient and durable MALE UAVs, while also encouraging innovation in aerodynamic design through the application of winglet technology.

Haryadi, Ekananda; Wardoyo, Bambang Tri; Riyanti, Menul Teguh; Murwonugroho, Wegig; Haura, Nazzalla Izzabelle +1 more

Jurnal Riset Rumpun Seni, Desain dan Media 2025 Pusat Riset dan Inovasi Nasional

The Ciomas Golok is one of Banten’s intangible cultural heritage items, carrying profound historical, philosophical, and social meaning. More than a traditional weapon, it represents identity, honor, and the spirit of resistance against colonial rule. This study explores the origins and genealogy of the Ciomas Golok, analyzes the philosophy of “grip strength” encompassing physical, mental, and spiritual dimensions, and explains its role as a symbol of honor within Banten society. The research also examines its transformation in the modern era and compares it with other traditional weapons in the Nusantara and abroad. A qualitative method with a cultural ethnographic framework was applied. The research took place in Ciomas District, Serang Regency, as well as in museums, traditional markets, and cultural festivals. Data collection involved participant observation, in-depth interviews with blacksmith masters, community leaders, cultural figures, and youth, supported by literature documentation. Data analysis employed semiotics and symbolic anthropology, with validity maintained through triangulation of sources, methods, and theories. Findings show that the Ciomas Golok dates back to the Banten Sultanate era, evolving from an agricultural tool and weapon of resistance into a cultural artifact and creative economic commodity. The philosophy of “grip strength” highlights holistic values the golok as a symbol of honor, responsibility, and solidarity. Its continuing presence underscores the urgency of preservation. The study concludes that safeguarding the Ciomas Golok requires collaboration among blacksmiths, local communities, government, and academics to ensure its ongoing relevance as both a cultural emblem and an expression of Indonesian national identity.

Feriyawan Feriyawan; Seflahir Dinata; Jamal A Rachman Saprin; Angga Septian MN

Jurnal Riset Rumpun Ilmu Teknik 2025 Pusat riset dan Inovasi Nasional

Indonesia is a country with high lightning strike intensity, making lightning protection systems critically important, especially for public infrastructure such as Light Rail Transit (LRT). This research aims to analyze the lightning protection system implemented in the Jakarta LRT Phase 1B Project, particularly in the station areas and railway lines. The methods used include field observation, literature study, interviews, and technical analysis using the rolling sphere method, protective angle method, and mesh method to determine the coverage of protected areas. In addition, an evaluation of the grounding system was conducted to ensure the safe discharge of lightning currents into the earth. The analysis results show that the lightning protection system applied complies with PUIPP and IEC 62305-1 standards and is capable of protecting signaling and telecommunication equipment from lightning risks. The combination of the three protection methods provides comprehensive coverage for LRT structures. The grounding system design also meets the standard resistance requirement (< 5 Ohms), ensuring operational safety and protecting critical equipment. Furthermore, the study highlights the importance of integrating lightning protection with other safety systems such as fire protection and electrical surge protection, as lightning can cause cascading failures that disrupt railway operations. Proper maintenance and periodic testing of grounding resistance are also necessary to ensure long-term reliability. In addition, the Faraday cage principle applied to train cars contributes to passenger safety by preventing lightning currents from penetrating the cabin interior. This research is expected to serve as a reference for developing lightning protection systems in similar infrastructure projects, especially in regions with high lightning density. By applying international standards and comprehensive protection methods, the Jakarta LRT demonstrates how modern urban transportation can operate safely despite extreme weather risks.

Widya Setya Ningrum; Syaiful Anwar

Maeswara : Jurnal Riset Ilmu Manajemen dan Kewirausahaan 2025 Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

This study aims to determine whether there is an influence on the Impact of the Digital Era (X1), Organizational Culture (X2), and Employee Involvement (X3) on Employee Work Efficiency (Y) at PT Indogadai Prima Tangerang City Branch. The research used in this study is quantitative, with a non-probability sampling technique. The sample consisted of 100 respondents representing different job positions, ranging from area managers, store heads, cashiers, to sales clerks. Data were collected through a structured questionnaire using a Likert scale. Furthermore, the data analysis applied descriptive statistics, validity and reliability tests, classical assumption tests, multiple linear regression, t-tests, and the coefficient of determination using SPSS version 25. The results of this study indicate that the Impact of the Digital Era has a positive but not significant effect on Employee Work Efficiency, Organizational Culture has a significant effect on Employee Work Efficiency, while Employee Involvement does not significantly influence Employee Work Efficiency. Among the independent variables, Organizational Culture is the most influential factor in determining employee efficiency. The findings highlight the importance of strengthening organizational culture to enhance efficiency while ensuring that digital transformation is implemented with strategies that reduce resistance and increase adaptability. This research contributes theoretically to the study of human resource management in the digital transformation era and provides practical recommendations for companies in developing policies to optimize employee efficiency.

Wawan Kurniawan; Syarifuddin Syarifuddin; Muh. Fahreza W

International Journal of Studies in International Education 2025 Asosiasi Riset Ilmu Pendidikan Indonesia

This study explores the role of principal leadership style in shaping the quality of 21st-century teaching skills among elementary school teachers in Indonesia, with particular attention to leadership practices, challenges encountered, and strategies for improvement. Using a descriptive qualitative approach, the research was conducted at SD Negeri 90 Sampulungan, Takalar, South Sulawesi, involving the principal and teachers as participants. Data were gathered through in-depth interviews, direct observations, and documentation to provide a comprehensive understanding of the phenomenon. The findings indicate that the principal primarily employed transformational and democratic leadership styles. These approaches motivated teachers by inspiring them with clear visions, serving as role models, and encouraging active participation in decision-making processes. Such leadership practices contributed significantly to teacher engagement and the overall school climate. Teachers, in turn, demonstrated competencies aligned with 21st-century learning demands, particularly through the application of the 4Cs: critical thinking, creativity, communication, and collaboration. They also showed efforts in integrating information and communication technology (ICT) into their teaching practices and implementing interactive classroom management strategies. However, several challenges were identified, including limited availability of facilities, resistance among some teachers toward adopting innovative methods, and the heavy administrative workload that often distracted from instructional focus. To address these issues, the principal implemented various strategies such as organizing continuous professional development training, providing close supervision and mentoring, and offering motivational support to sustain teacher commitment. Overall, the study emphasizes the crucial role of transformational leadership in strengthening teachers’ 21st-century skills and offers practical implications for educational policy development, while also recommending future studies across broader school contexts in Indonesia.

Lucky Akbar Pangestu; Deni Andriyansyah

Jurnal Riset Rumpun Ilmu Teknik 2025 Pusat riset dan Inovasi Nasional

This study aims to investigate how variations in the soaking time of Luffa cylindrica fibers in alkaline solutions affect the mechanical properties and fire resistance of the resulting composite material. The use of natural fibers is an important step in finding environmentally friendly and sustainable alternatives to replace synthetic materials. Luffa cylindrica fibers were chosen for their advantages, such as being lightweight, strong, and abundantly available. However, natural fibers like luffa contain non-cellulose compounds, such as lignin and hemicellulose, that can hinder strong bonding with the resin matrix. Therefore, pre-treatment with an alkaline solution is necessary to remove these interfering substances. In this study, composites were made using the hand lay-up method with polyester resin as the main matrix. The treatment variable tested was the fiber soaking time in KOH solution, with three variations: 2 hours, 4 hours, and 6 hours. After the composite fabrication, the samples were tested through several standard tests, including tensile tests to measure the material's strength under tension, impact tests to assess toughness, and burn rate tests to evaluate fire resistance. Additionally, macro and micro photo analysis (using SEM if possible) will be conducted to observe fracture characteristics and the quality of the fiber-resin bond. The expected outcome is that longer alkaline soaking will significantly improve tensile strength and toughness. Furthermore, longer soaking is also expected to improve fire resistance by forming a char layer, which acts as a thermal insulator, slowing heat transfer and reducing the rate of pyrolysis.

Ujang Wiharja; Muhammad Faqih

Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika 2025 Asosiasi Riset Ilmu Teknik Indonesia

Transmission line reconductoring is one of the strategic solutions to increase the capacity and efficiency of the power system without the need to build new infrastructure. This study aims to analyze and compare the performance of two types of conductors, namely ACSR Hawk and ACCC Amsterdam, used in the Suralaya-Cilegon 500 kV SUTET transmission line. The comparison is carried out by considering technical aspects including power losses, ampacity, horizontal and vertical sag values, and overall energy efficiency. The research methodology involved a literature study, collection of conductor technical data, calculation of resistance, current, and power losses, and simulation of sag values against temperature variations. In addition, economic analysis and field implementation aspects were also considered to assess the feasibility of using each conductor. The results show that Amsterdam's ACCC conductor has superior technical performance compared to Hawk's ACSR. ACCC is capable of delivering currents up to ±1300 A, compared to ACSR Hawk which is only ±800 A. The power loss value using ACCC is recorded at ±1.34 MW, lower than ACSR Hawk at ±1.79 MW. In addition, ACCC exhibits smaller sag values due to its lighter weight and higher tensile stress, making it more stable against temperature fluctuations. In terms of energy efficiency, the use of ACCC can save energy up to ±3942 MWh per year. By considering the technical advantages and long-term energy efficiency, this study recommends the use of Amsterdam ACCC as a reconductoring solution for high-voltage transmission lines, especially in systems that have high loads and require maximum reliability and efficiency.

M. Nazori; Agustina Mutia; Priska Yunita

Jurnal Penelitian Manajemen dan Inovasi Riset 2025 Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

The results of this study indicate that DT Peduli Jambi has not yet fully optimized the management of productive zakat, despite having a structured management system in place. Based on data analysis, several key factors were identified as obstacles to optimization. First, there is a lack of public trust in the institution, as reflected in the absence of significant growth in zakat collection over the past three years. This condition highlights the need for more effective communication and transparency strategies. Second, administrative challenges remain, such as a record-keeping system that is not yet fully integrated digitally and limited human resources with expertise in managing productive zakat. Third, resistance to change among beneficiaries persists, with approximately 30% refusing to adopt modern business management methods offered by the program. Fourth, there is a high dependency on assistance, with 40% of beneficiaries still heavily reliant on institutional mentoring. Fifth, participation in training programs remains low, with an average attendance rate of only 65%. Nevertheless, overall the program is categorized as “fairly successful” with an achievement score of 70 out of 100. This indicates that productive zakat holds great potential to promote economic empowerment of the community but has not yet been maximized due to structural and cultural barriers. Therefore, improvements are needed in transparency, capacity building of human resources, as well as persuasive and participatory approaches for beneficiaries, so that the goal of economic empowerment through productive zakat can be more effectively realized.

Moch. Edra Aurick Aryanta

Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil 2025 Asosiasi Riset Ilmu Teknik Indonesia

The development of transportation infrastructure in Indonesia continues to be prioritized to enhance regional connectivity, including the maintenance and replacement of bridges that have exceeded their service life. The Semut Bridge in Surabaya, originally a three-span reinforced concrete girder bridge, has experienced structural deterioration due to corrosion and the presence of a central pier obstructing river flow. These conditions have reduced hydraulic capacity, increased sedimentation risk, and heightened the potential for flooding. This study redesigns the Semut Bridge by converting the existing structure into a single-span Howe truss steel bridge. The load analysis refers to SNI 1725 using the Load and Resistance Factor Design (LRFD) method, while structural modeling was carried out both manually and with SAP2000 software. The planning includes the vehicle deck slab, composite girders, main truss members, connections, elastomeric bearings, and abutments. The results show that the bridge deck uses a 20 cm thick reinforced concrete slab with a one-way reinforcement system. Composite girders employ WF profiles, connections use shear connector studs with 25 mm diameter, and the main truss members adopt WF 900×300×16×38 profiles. The total concrete volume required is 282.6 m³, and the estimated steel demand reaches 122,383.79 kg. The single-span design eliminates the central pier, thereby improving river flow capacity while providing a structurally efficient, durable, and easily maintained solution.