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Oil palm plantations are often confronted with the problem of uncontrolled land expansion and suboptimal management, which potentially threaten the sustainability of the business from environmental, social, and economic perspectives for surrounding communities. This condition calls for a comprehensive evaluation of management practices implemented by independent smallholders. This study aims to determine the sustainability status of smallholder oil palm plantations in Parindu Subdistrict, Sanggau Regency, assessed from five main dimensions: ecological, economic, social, institutional, and technological. In addition, the study analyzes attributes that have sensitivity levels affecting the future sustainability of oil palm farming as a basis for formulating improvement strategies. A total of 36 respondents were selected using purposive sampling techniques and in-depth interviews. The research method employed was quantitative descriptive using the Rap-Palmoil approach and qualitative descriptive supported by kite diagrams to clarify the analysis results. The findings indicate that the management status of oil palm plantations falls into the moderately sustainable category, with MDS values of 53.61 for Embala Village and 55.75 for Maju Karya Village. The dimensions that require priority improvement in both villages are the ecological and technological dimensions.

This study aims to analyze the role of local Micro, Small, and Medium Enterprises (MSMEs) in utilizing lemongrass (Cymbopogon citratus) as the main ingredient for mosquito repellent products and its contribution to improving the economy of the community in Timbang Jaya Village. Lemongrass contains essential oils that function as a natural insect repellent, making it a potential raw material for value-added products such as mosquito repellent sprays, aromatherapy candles, and herbal lotions. This research employed a descriptive qualitative method with data collected through interviews, observations, and literature studies. The findings indicate that local MSMEs play a significant role in the production process, product innovation, and marketing of lemongrass-based products. Besides generating additional income, this development also creates new job opportunities and supports the village’s economic independence. However, several challenges remain, including limited capital, lack of processing technology skills, and competition with chemical-based products. The recommended solutions include capacity building through training and mentoring, better access to funding, and strengthening digital marketing strategies. Therefore, the development of mosquito repellent products from lemongrass by MSMEs not only contributes to the community’s economic growth but also provides an environmentally friendly alternative beneficial for public health.

Hyperemesis gravidarum is a common complication in early pregnancy characterized by excessive nausea and vomiting that can negatively affect maternal health and quality of life. Although pharmacological management is widely used, concerns regarding medication safety during pregnancy have increased interest in complementary and non-pharmacological interventions. One such approach is aromatherapy, particularly the use of lavender essential oil, which is known for its calming and antiemetic properties. This study aimed to evaluate the effectiveness of lavender aromatherapy in reducing the frequency of hyperemesis gravidarum among pregnant women at RSUD Tikep. This research employed a quantitative quasi-experimental design with a pretest–posttest approach. A total of 30 first-trimester pregnant women experiencing hyperemesis gravidarum were selected using purposive sampling. The intervention involved inhalation of lavender aromatherapy administered for a predetermined duration and frequency. The frequency of nausea and vomiting was measured before and after the intervention using observation sheets and self-reported records. Data were analyzed using SPSS software, including descriptive statistics, normality tests, and paired sample t-tests. The results demonstrated a significant reduction in the mean frequency of hyperemesis gravidarum following the administration of lavender aromatherapy. Statistical analysis revealed a p-value of less than 0.05, indicating a significant difference between pre-intervention and post-intervention measurements. These findings suggest that lavender aromatherapy effectively reduces the frequency of nausea and vomiting in pregnant women. In conclusion, lavender aromatherapy is a safe, low-cost, and effective complementary therapy for managing hyperemesis gravidarum. Its integration into routine antenatal care may enhance maternal comfort and support holistic, patient-centered maternity services, particularly in regional healthcare settings.

The development of the palm oil industry in Indonesia typically relies on collaboration with smallholder farmers, but this collaboration often faces various problems such as poor cultivation techniques, lack of technical guidance, unclear administrative matters, and limited access to certification and markets. This study aims to develop a specific human resource management model to support collaboration with smallholder farmers, thereby improving production yields, sustainability, and engagement in the palm oil supply chain. The method used is a desk study, namely by analyzing and reconstructing information from research results, industry reports, and palm oil certification and sustainability policies. Based on the analysis, a career structure and Human Resource Management functions are proposed, consisting of collaboration supervisors, field officers, capacity training officers, collaboration administration staff, and collaboration/certification managers. This model allows for technical and administrative assistance, training for farmers, collaboration coordination, and certification and compliance management. The implementation of this model is predicted to improve cultivation quality, improve smallholder access to certification and markets, and strengthen the stability and sustainability of the supply chain. Thus, the HR model for smallholders offers a strategic solution to the various challenges of working with smallholders and supports the development of a socially, economically, and environmentally sustainable palm oil agribusiness sector.

The development of the palm oil industry in Indonesia typically relies on collaboration with smallholder farmers, but this collaboration often faces various problems such as poor cultivation techniques, lack of technical guidance, unclear administrative matters, and limited access to certification and markets. This study aims to develop a specific human resource management model to support collaboration with smallholder farmers, thereby improving production yields, sustainability, and engagement in the palm oil supply chain. The method used is a desk study, namely by analyzing and reconstructing information from research results, industry reports, and palm oil certification and sustainability policies. Based on the analysis, a career structure and Human Resource Management functions are proposed, consisting of collaboration supervisors, field officers, capacity training officers, collaboration administration staff, and collaboration/certification managers. This model allows for technical and administrative assistance, training for farmers, collaboration coordination, and certification and compliance management. The implementation of this model is predicted to improve cultivation quality, improve smallholder access to certification and markets, and strengthen the stability and sustainability of the supply chain. Thus, the HR model for smallholders offers a strategic solution to the various challenges of working with smallholders and supports the development of a socially, economically, and environmentally sustainable palm oil agribusiness sector.

Tawiri Village, Teluk Ambon District, possesses non-timber forest product (NTFP) potential, including patchouli (Pogostemon cablin Benth.) as a high-value essential oil producer. Patchouli cultivation development faces limitations in farmers' capacity regarding technical cultivation, post-harvest handling, and product downstream processing. This community service activity aims to enhance the Citra Aroma Forest Farmer Group (KTH) capacity in sustainable patchouli cultivation. Activities were conducted from September to November 2025 using a participatory knowledge transfer approach based on the Knowledge Transfer Framework, encompassing awareness, acquisition, application, and knowledge utilization-evaluation stages. Implementation included socialization, technical training, field demonstrations, and cultivation mentoring. Results demonstrate increased knowledge and skills among KTH members in seedling selection, land preparation, planting techniques, and patchouli maintenance. The main output is a Pocket Book on Sustainable Patchouli Cultivation SOP integrating scientific knowledge with local practices. This activity contributes to strengthening farmer group institutional capacity, developing NTFP-based entrepreneurship, and supporting the achievement of SDGs 1 and SDGs 8.

Purworejo Regency is one of the centers of herbal plant production in Indonesia. One of these is lemongrass, which is widely found in the Ngombol area. Furthermore, this plant can be used to make herbal products. However, the selling value of this plant is still relatively low because it relies solely on middlemen or collectors. One product made from lemongrass is essential oil. The goal of this Community Service program is to increase the selling value of lemongrass and provide new business opportunities to increase the income of local farmers, especially Mrs. Kasminah in Wonosari Village, Ngombol District, Purworejo Regency. The implementation method includes preparation, core, and completion. The result of this activity is the creation of a new innovation in the form of a practical herbal drink without preservatives that has quite good market potential and is in demand by consumers. Then, the product is branded Sempontea. Achievements during the activity include a significant increase in income, as well as the creation of effective offline and online marketing strategies. This activity also succeeded in establishing a sustainable business ecosystem and increasing environmental awareness through the use of herbal plants.  Overall, this community service activity has succeeded in increasing the selling value of lemongrass plants, improving the economy of local farmers, and providing social and economic impacts for the community through the utilization of local resources.

Indonesia’s Oil and gas project construction continue face challenges notably delays that lead to underperformance. This study tries to describe the factors that causing delays in EPC oil and gas project in Indonesia from project management view. Started by overall study on cause of delays in construction worldwide, thus phenomenon on neighboring country (Malaysia) where Indonesian workers involved, then study continues with factors in Indonesia as overall, and include specific project which are South Sumatera and Sumbawa. Three main factors are always present in the cause of delays in EPC Project in Indonesia namely; contractor’s financial problem in funding the project, poor project planning and estimation leads to unrealistic determination of the duration, and ineffective change management by owner in project showed in resolving contract dispute, requirement changes, and dispute in understanding in contract articles. These factors are clearly present in EPC projects in Indonesia as main contributor in project delays together with two additional factors namely legal awareness and social community problems.

Coffee husk is an agro-industrial waste with significant potential to be utilized as a renewable energy source through the fast pyrolysis process. This study aims to analyze and optimize gas production from the fast pyrolysis of coffee husk biomass using a screw reactor through single-particle-based Computational Fluid Dynamics (CFD) simulations. The simulations were conducted by varying the operating temperature at 500°C, 600°C, and 700°C to examine pressure distribution, heat transfer, particle temperature, and the formation of pyrolysis products, namely bio-oil, biogas, and biochar. The modeling was performed using COMSOL Multiphysics 6.2 with a numerical approach to represent thermal phenomena and biomass decomposition reactions during the pyrolysis process. The simulation results indicate that increasing temperature significantly affects the rate of heat transfer and the temperature distribution of coffee husk particles. At 600°C, heat transfer and temperature distribution are more uniform compared to 500°C, although heating at the particle core is not yet fully optimal. The pressure distribution shows a stable flow of pyrolysis gas from the bottom to the top of the reactor. In terms of products, increasing temperature leads to a reduction in biochar and bio-oil formation due to the occurrence of secondary reactions, while biogas production increases. The highest gas production is achieved at 700°C, indicating the most optimal condition for maximizing gas yield from fast pyrolysis. Therefore, single-particle-based CFD simulation can be used as an effective tool to understand pyrolysis mechanisms and optimize process parameters in a screw reactor.

Oil palm plantations constitute a leading subsector that plays a strategic role in regional economic development, particularly in Nagan Raya Regency, which is predominantly based on the agricultural sector. This study aims to analyze the role of the oil palm plantation subsector in promoting regional economic development using the Economic Base Theory as an analytical approach. A descriptive qualitative method with a literature study was employed. The data used consist of longitudinal secondary data for the period 2019–2024, sourced from official publications of Statistics Indonesia, regional development planning documents, and relevant scientific articles. The results show that the agricultural sector, dominated by the oil palm plantation subsector, makes a large and relatively stable contribution to the Gross Regional Domestic Product (GRDP) of Nagan Raya Regency, thereby qualifying it as a basic sector. This subsector also plays an important role in employment absorption, particularly in rural areas. However, the substantial economic contribution and labor absorption have not been fully accompanied by equitable improvements in community welfare, as indicated by the relatively slow decline in poverty rates. This condition suggests that the economic multiplier effect of the oil palm plantation subsector has not yet been optimal due to limited downstream activities and low value-added processing at the regional level. The study concludes that strengthening downstream industries and intersectoral linkages is necessary to ensure that the role of oil palm plantations can more effectively support inclusive and sustainable regional economic development.

The purpose of this study is to determine the perception of Plasma Farmers/Partners on the Existence of PT. Tani Prima Makmur Oil Palm Plantation, Andabia Village, Anggaberi District, Southeast Sulawesi Province. The number of samples in the study was 54 respondents of partner/plasma farmers. There are two types of data in general, namely quantitative data and qualitative data. The data sources used in this study are primary data and secondary data. The data analysis method in this study is qualitative descriptive analysis, with a qualitative analysis model. With a Likert scale, the measured variables are described into variable indicators. Then the indicators are used as a starting point for compiling instrument items that can be in the form of questions or statements. The answers to each instrument item using a Likert scale have positive questions and negative questions. Based on the results of the analysis, it appears that public perception regarding the economic impact of PT Tani Prima Makmur's activities is assessed as a total score of 574, indicating that the existence of oil palm plantations has a positive impact on improving the economy of partner/plasma farmers. The overall social impact has a total score of 416, which means that the presence of oil palm plantations is perceived to have a negative impact on the social community of partner/plasma farmers.

Operational quality in the oil and gas sector strongly depends on the accuracy of monitoring instruments, such as oxygen analyzers. This study aims to validate the performance of an oxygen analyzer using the Factory Acceptance Test (FAT) procedure conducted by PT JGC Indonesia. The testing methodology involves the use of reference gases at different concentration levels, including nitrogen as the zero gas, to evaluate the linearity and consistency of the analyzer output within the 4-20 mA signal range. In addition, the tests are performed to verify the conformity of the instrument response with the datasheet specifications and applicable FAT procedures. The results show that the analyzer provides accurate measurement data with low deviation and a responsive alarm system under critical conditions. These findings confirm that the instrument meets the required technical standards. Based on the validation results, the oxygen analyzer is considered ready for installation and suitable for operation to support process safety in oil and gas facilities. This achievement confirms that a rigorous validation process is key to ensuring peace and operational safety in the oil and gas industry.

Used cooking oil is a household waste that is often disposed of carelessly, potentially polluting the environment and endangering health. In Battu Winagun Village, the availability of used cooking oil from household activities and the abundant potential of lemongrass plants have not been optimally utilized. This community service activity aims to increase the community's knowledge and skills in processing used cooking oil and lemongrass plants into environmentally friendly products with economic value, namely natural aromatherapy candles. The implementation method includes socialization of the negative impacts of used cooking oil on the environment, training in the process of filtering and processing used cooking oil, extracting lemongrass aroma, and assistance in making and packaging aromatherapy candles. The results of the activity showed that the Battu Winagun Village community was able to understand the importance of managing used cooking oil waste and utilizing lemongrass plants as a natural additive. This activity has an impact on reducing environmental pollution and opening up creative business opportunities based on the village's local potential. Thus, the use of used cooking oil and lemongrass plants can be a sustainable solution in waste management while improving the economy of the Battu Winagun Village community.

Strategies to increase the income of self -help palm oil farmers can help farmers to increase production yields. This study aims to formulate and obtain strategies in an effort to increase the income of oil palm farmers. This research was conducted in Kalis District, Kapuas Hulu Regency. This study was carried out from April 5 to May 524. This study used a descriptive quantitative method with case study methods and identified internal factors (strengths and weaknesses) and external (opportunities and threats) used for the strategy to increase the income of oil palm farmers in the sub -district dull. The variables used in this study were obtained from indicators of strengths, weaknesses, opportunities and threats. Based on the results of the research results of the collection, processing and analysis of the main internal factors, it is found that the main strength factor of farmers is the status of land ownership and land area owned by farmers with a weight score of 0.41. As for the main weakness of self -help farmers is inadequate access to infrastructure with a weight score of 0.18 and the total score of the IFE matrix is ​​2.51. For data analysis of the main external factors, it is found that the main opportunity factor of farmers is oil palm can be a term investment for farmers with a weight score of 0.41. As for the main threat of self -help farmers is a long queue at the Palm Oil Mill (PKS) with a weight score of 0.18 and the total score of the IFE matrix is ​​2.62. The results of processing internal and external data of farmers using the IE matrix show that the position of farmers is in quadrant I, the suitable strategy is an aggressive strategy that can support the growth of oil palm farming.

In article 157A of Law Number 6 of 2023 that in the process of termination of employment, employers and permanent workers must carry out their respective obligations, employers can carry out suspension actions and still pay wages and other rights, but in reality employers rarely apply article 157A. The purpose of the research is to analyze the Implementation, Obstacles and Efforts on Workers' Rights in Wage Payment During the Termination of Employment Process at Palm Oil Company in Siak Regency. This type of research is Sociological legal research. In this research, three approaches are used, namely the legislative approach and the data source case approach using primary data and secondary data. The data collection technique used is primary data through interviews and questionnaires. The conclusion of this study is the legal protection of workers' rights during the termination of employment by the company through the settlement of industrial relations disputes in which there are various interpretations regarding the wage process. Article 157A of Law Number 6 of 2023 states that the responsibility of employers and workers remains valid until the industrial relations dispute settlement agency makes a decision. The implementation in the process of termination of employment is that workers are no longer allowed to work by the company but do not carry out suspension actions, but there are many companies that do not carry out things regulated by law. With the existence of multi-interpretation regulations on wages, the process provides uncertainty for workers, as well as in the interim decision submitted by the worker/plaintiff which is rejected by the judge which is clear that the worker can prove that the employer does not carry out his obligations as it should.

Stock monitoring is a critical phase that must be performed regularly to maintain the accuracy and efficiency of inventory management. Continuous monitoring ensures that all items remain under proper oversight, thereby making stock management processes simpler, more controlled, and highly accurate. PT XYZ operates in the general contracting sector and provides a range of services, including land transportation, crude oil rental, heavy equipment and light vehicle rental, material supply, and well maintenance services. At present, stock monitoring at PT XYZ still relies on a general-purpose application designed solely for numerical calculations. This approach leads to several limitations in the current system, most notably the lack of a login feature and the requirement to recreate reports using a separate application. Based on these problems, this research aims to design a prototype of a stock monitoring information system at PT XYZ. The system is developed using the waterfall development model and documented using use case diagrams. The main output of this study is a prototype information system that allows users to change their own password, perform CRUD operations on data entities including users, items, categories, brands, units, vehicles, suppliers, incoming goods, and outgoing goods, generate various reports related to inventory/stock at PT XYZ.

PLN (Persero) is the state-owned company responsible for supplying electrical energy in Indonesia and plays a crucial role in ensuring the reliability and continuity of power distribution. Therefore, all electrical equipment, particularly power transformers, must be maintained in safe and reliable operating conditions. Transformers function to change voltage levels from high to low or vice versa and are essential components in the electric power distribution system. One important transformer component that requires periodic maintenance is the On Load Tap Changer (OLTC). To maintain transformer performance and extend its service life, routine maintenance activities such as OLTC oil replacement are necessary. PT. PLN (Persero) ULTG Rangkasbitung conducts regular OLTC oil replacement twice a year as part of its preventive maintenance program. Transformer oil serves as both an insulating medium and a cooling agent; therefore, its condition greatly affects transformer reliability and operational safety. Degraded oil quality can cause insulation failure and reduce transformer efficiency. This study aims to describe the procedure and implementation of On Load Tap Changer oil replacement at the transformer substation of PT. PLN (Persero) ULTG Rangkasbitung. The research method used is field research, carried out through direct observation and interviews with maintenance personnel. The results of this study are expected to provide a clear understanding of the OLTC oil replacement process, support proper maintenance practices, and emphasize the importance of transformer maintenance in ensuring the reliability and sustainability of the electric power system.

This study examines the development of a Crude Palm Oil (CPO) price forecasting model using an artificial neural network algorithm, specifically the backpropagation algorithm. As one of Indonesia’s main export commodities, CPO has a significant economic impact and influences the income of oil palm farmers. The CPO price data used in this study were obtained from CIF Rotterdam, covering the period from January 2019 to December 2023. The research methodology consists of several stages, including data collection, preprocessing, model design, and model implementation using Python programming. The training results of the backpropagation algorithm show an error value of 0.537829578 after 1,000 epochs, while the evaluation using Mean Squared Error (MSE) indicates an MSE of 0.022709 during the training process and 0.017604 during the testing process. The model also produces CPO price predictions for the next three months, namely 932.578 for the first month, 949.568 for the second month, and 774.855 for the third month. These findings indicate that the developed model is capable of predicting future CPO prices with adequate accuracy, which can assist companies in making better financial decisions and managing risks associated with CPO price fluctuations.

Converting used cooking oil into aromatherapy candles represents an environmentally sustainable solution for household waste management while supporting community-based economic development. This research examines the process and results of a participatory empowerment initiative conducted in Buddagan Village, aimed at producing value-added aromatherapy candles from used cooking oil. Employing a qualitative descriptive methodology with a participatory approach, the study involved 60 housewives as active contributors. Program activities were implemented through direct, in-person sessions encompassing education on health and environmental hazards of improper oil disposal, hands-on candle-making training, and basic instruction on product marketing. The production process consisted of oil purification using activated charcoal, mixing with stearic acid, heating, adding colorants and fragrances, and molding. Data were collected through direct observation of participant involvement, skill development, and product quality, and analyzed inductively. The results demonstrate increased environmental awareness, enhanced technical competence, and the successful production of aromatherapy candles with satisfactory shape, fragrance, and burning consistency.

The global energy crisis and climate change are driving the development of biodiesel as a renewable energy source. Graphite as an additive shows significant potential in improving the efficiency and reducing emissions of biodiesel. This study maps graphite-biodiesel research in Southeast Asia using a meta analysis of systematic reviews of 68 publications from Scopus, Web of Science, and ScienceDirect from 2015-2024. The results show that Malaysia leads in publication contributions (32%), followed by Thailand (28%) and Indonesia (18%). The optimal graphite concentration of 50 ppm increases brake thermal efficiency by 8.3% and reduces CO (15.7%), HC (12.4%), and smoke (18.9%) emissions, although there is an increase in NOx (6.8%). Palm oil methyl ester dominated the research (56%). Indonesia has strategic opportunities with abundant feedstock and graphite deposits, but faces challenges in research infrastructure, limited international collaboration, and the absence of an integrated national roadmap. Infrastructure investment, human resource strengthening, and industry academia collaboration are needed to accelerate national biodiesel research.