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Hospital nutrition services are an integral component of improving the quality of patient health. This descriptive observational study aims to evaluate the achievement of Minimum Service Standards (MSS) for nutrition at RSUD Dr. H. Slamet Martodirdjo Pamekasan, specifically focusing on the accuracy of diet types, timeliness of food distribution, and patient food waste. Data were collected over a single menu cycle (10 days) from November 24 to December 4, 2025, involving 44 patients per day. Research instruments included observation sheets and the Comstock visual method, with data analyzed based on the Decree of the Minister of Health (Kepmenkes) No. 129 of 2008. The results indicated that the timeliness of food distribution reached 96% and the accuracy of diet types reached 100%, both of which met the MSS requirements (≥ 90% and 100%, respectively). However, the average patient food waste was 25%, which does not yet meet the maximum standard of ≤ 20%. In conclusion, while logistical aspects have fulfilled the established standards, the hospital needs to conduct further evaluations regarding food flavor factors and patients' clinical conditions to reduce food waste in accordance with the applicable standards.

The issue of plastic waste is increasingly becoming an environmental concern, including in elementary schools, due to its non-biodegradable nature and its potential to cause environmental pollution if not properly managed. This activity aims to implement the Ecobrick method as an innovative solution for managing and utilizing plastic waste at SDN 054945 Desa Dogang, Gebang District, Langkat Regency. The method used is a descriptive qualitative approach involving 65 students from grades IV and V through a community service activity. The activity was carried out on July 17, 2024, through preparation, implementation, and evaluation stages, with data collection techniques including observation, documentation, and reflective discussion. The results show that the application of the Ecobrick method successfully increased students' understanding and awareness of the dangers of plastic waste and fostered an early environmental concern. Moreover, previously worthless plastic waste was processed into functional Ecobrick benches that can be utilized within the school environment. This activity also encouraged a sense of mutual cooperation, responsibility, and creativity among the students. Thus, the Ecobrick method has proven to be an effective alternative for plastic waste management and a contextual learning medium in creating an environmentally friendly school culture.

This community service activity was carried out in the Parbaba White Sand Beach tourist area, Samosir Regency, with the aim of improving environmental cleanliness while fostering student awareness of the importance of preserving tourist destinations. This program is the result of a collaboration between the internship students of the Samosir Regency Tourism Office and the students of the Real Work Lecture (KKN) of Gadjah Mada University. The method used is a participatory approach, where students are directly involved in beach cleaning and waste sorting activities. The team cleaned the beach area, collected garbage, and separated waste into two categories, namely organic and inorganic. The results of the activity showed an increase in beach cleanliness and an increase in student awareness of the importance of protecting the tourist environment. In addition, this activity strengthens cooperation, social responsibility, and collaboration skills between students. This service program is expected to be a model of sustainable environmental activities that can be applied in other tourist destinations, thereby supporting the development of environmentally friendly and sustainable tourism.

Cassava is one of the strategic agricultural commodities in Indonesia, contributing significantly to national production, particularly in several major producing provinces. In addition to the challenge of declining harvested areas, cassava processing activities also generate agricultural waste that poses environmental risks. In Purwasari Village, Dramaga Subdistrict, Bogor Regency, household-scale cassava processing industries produce solid waste in the form of cassava peels, which are not optimally managed and are commonly discarded in the surrounding environment. This cassava waste has the potential to cause environmental pollution, unpleasant odours, and negative impacts on public health. One sustainable alternative for managing this cassava waste is the use of cassava peels as a raw material for composting. This study aimed to identify problems associated with cassava peel waste and to assess members of the Taruna Tani Millennial Farmer Group's interest in compost production using cassava peels. The research was conducted from December 2024 to June 2025 using a community-based assistance approach. Data was collected through interviews and questionnaires involving 20 respondents. The results showed that the main problems associated with cassava peel waste include waste accumulation, limited processing facilities, and low community awareness. Farmers’ interest in cassava peel composting was generally categorized as high, with an average score of 77%, although several indicators remained at a moderate level. Extension activities and hands-on demonstrations were proven to enhance farmers’ understanding, interest, and participation. With sustained educational support and adequate facilities, the use of cassava peel compost has strong potential to promote environmentally friendly, sustainable agricultural waste management.

The global environmental crisis has had an impact on religious educational environments such as Islamic boarding schools. The phenomenon at Pondok Pesantren X Malang shows a gap between the normative knowledge of students about cleanliness and their actual behavior, such as the habit of littering. This study is based on the hypothesis that students' ecological awareness is formed through the interaction between knowledge, experience, and the social context in the pesantren. The research method uses an exploratory qualitative approach with a grounded research design through in-depth interviews, participatory observation, and documentation of six students aged 10–12 years. The results revealed three main themes: knowledge about trash (45%), irresponsible habits (34%), and active awareness (21%). These findings confirm that although santri have a fairly good initial understanding, behavioral change is still hindered by social habits. In conclusion, strengthening reflective education, the exemplary role of ustadz, and institutional support are crucial for building sustainable ecological awareness in Islamic boarding schools.

Semarang City is an urban area with a high vulnerability to flooding. Based on data from the Semarang City Regional Disaster Management Agency, in 2022 there were 133 flood events with extreme rainfall reaching 200 mm per day. Kota Lama Semarang is a historical tourist destination with high heritage value, but this area often faces flooding challenges, especially around the Tawang Polder Area with inundation reaching 30-100 cm. This condition is triggered by an existing drainage system that is not optimal due to limited channel capacity and blockages caused by sedimentation. The purpose of this study is to develop the SEMAR-SUDs smart drainage system innovation. The writing method was carried out through literature studies, hydrometeorological data reviews, and descriptive-quantitative analyses, which formed the basis for the design and implementation of the innovation. SEMAR-SUDs (Semarang-Sustainable Urban Drainage Systems) concept is an integrative solution that combines three main elements Debris Separate Baffle Boxes (DSBB) as a technology for separating waste and sediment, ArborFlow technology based on ecodrainage that optimizes rainwater retention and distribution and Self Closing Flood Barriers that work automatically to protect critical areas. The implementation of SEMAR-SUDs can be a solution model in increasing flood disaster resilience in the city of Semarang while supporting the realization of SDGs 9 (sustainable infrastructure development), SDGs 11 (resilient and sustainable cities), and SDGs 13 (climate action). The SEMAR-SUDs innovation is highly suitable for implementation in Semarang City to mitigate flooding and realize a smart, adaptive, and sustainable drainage system infrastructure.

The increasing demand for housing in tropical regions requires building materials that are fast to apply, environmentally friendly, and resilient to extreme climate conditions as well as disaster risks. Conventional interlocking bricks are often chosen for their ease of construction, yet they still face challenges such as moisture and early cracking. This study proposes the innovation of the Hybrid Living Green Brick, a combination of lightweight bricks made from rice husk ash and fly ash waste (FRCB) with a biological layer of cyanobacteria. FRCB improves compressive strength by approximately 30% with the addition of 5% rice husk ash, achieving 65 kg/cm², thereby meeting Class 50 requirements (≥50 kg/cm²) according to SNI-15-2094-2000. The incorporation of 3% cyanobacteria provides an additional though not significant strength improvement, while still within the Class 50 category. It also reduces brick weight by 4.3%, with further optimization potential through cyanobacteria integration, and lowers carbon emissions from the firing process. Cyanobacteria induce the formation of CaCO₃ layers that seal pores, reduce water absorption by an average of 10%, and provide self-healing properties for microcracks. Preliminary observations indicate that FRCB offers stable mechanical performance, while biological activity was observed on the 7th day with the formation of pale-white mineral layers continuing until the 28th day. This hybrid innovation shows potential to support sustainable and disaster-resilient tropical construction by combining the mechanical strength of waste-based materials with the biological durability of cyanobacteria against extreme climates. Despite challenges related to moisture control and production standardization, the Hybrid Living Green Brick concept opens new pathways for developing environmentally friendly construction materials that are more adaptive to disaster-prone tropical conditions.

Population growth and changing consumption patterns have led to a continuous increase in waste generation, with household organic waste being the dominant component in Bantul Regency. Low levels of public knowledge and awareness regarding waste management are also contributing factors. One environmentally friendly alternative for organic waste management is the use of Black Soldier Fly (BSF) larvae, which have high bioconversion capabilities. This community service activity aims to increase the knowledge of housewives in managing household organic waste using BSF maggots. The activity was carried out in RT 01, Mojosari Hamlet, Baturetno Village, Banguntapan District, Bantul Regency, involving 20 participants. The implementation method included a site survey, material delivery, an introduction to the life cycle and benefits of BSF maggots, an explanation of waste sorting, maggot feeding, and post-activity observations. However, limitations in maggot maintenance techniques persisted, requiring ongoing mentoring. This activity contributes to reducing waste generation at its source and supports sustainable household waste management based on community participation.

Population growth and changing consumption patterns have led to a continuous increase in waste generation, with household organic waste being the dominant component in Bantul Regency. Low levels of public knowledge and awareness regarding waste management are also contributing factors. One environmentally friendly alternative for organic waste management is the use of Black Soldier Fly (BSF) larvae, which have high bioconversion capabilities. This community service activity aims to increase the knowledge of housewives in managing household organic waste using BSF maggots. The activity was carried out in RT 01, Mojosari Hamlet, Baturetno Village, Banguntapan District, Bantul Regency, involving 20 participants. The implementation method included a site survey, material delivery, an introduction to the life cycle and benefits of BSF maggots, an explanation of waste sorting, maggot feeding, and post-activity observations. However, limitations in maggot maintenance techniques persisted, requiring ongoing mentoring. This activity contributes to reducing waste generation at its source and supports sustainable household waste management based on community participation.

Plastic waste has become one of the main environmental problems due to its nature, which is difficult to decompose naturally and can cause environmental pollution. One alternative waste treatment method that can be applied is to use a plastic melter to melt and recycle plastic waste into useful products. However, the design of plastic melters often lacks consideration of structural strength and safety aspects during the operation process. This study aims to design and engineer a plastic melter using the Finite Element Analysis (FEA) simulation approach to analyze structural resistance to thermal and mechanical loads that occur during the operation process. The research method was carried out through 3D design modeling of plastic melter components using Solidworks software, followed by analysis with FEA simulation on the main component, namely the melting tube. The parameters analyzed include the distribution of von Mises stress, the amount of displacement, and the safety factor. The analysis results show that the analyzed components experience von Mises stress distribution and displacement that are still below the material tolerance limits, with safety factor values above the recommended safety limits. Thus, the resulting plastic melter design is declared safe and can proceed to the manufacturing process. Therefore, the plastic melter design is safe, strong, and feasible to be realized as an effective and sustainable plastic waste processing technology solution.

Waste management at the village level still faces various challenges, particularly related to the practice of open burning, which causes environmental pollution and health risks. This condition reflects a gap between the concept of sustainable waste management within the framework of the Sustainable Development Goals (SDGs) and the social reality of local communities. This community service activity aims to implement a low-smoke waste burning container as a community-based waste management innovation and to analyze its contribution to the achievement of the SDGs in Nglaris Village. The method applied was a participatory approach involving observation, socialization, design and construction of the burning container, assistance, and program evaluation. The results indicate that the implementation of the low-smoke burning container reduces the intensity of smoke emissions, increases community participation, and encourages behavioral changes in waste management practices. The program also contributes to improving the quality of the living environment and supports the achievement of SDGs, particularly in environmental, health, and sustainable settlement aspects. These findings demonstrate that simple technological innovations adapted to local social conditions can serve as a model for sustainable waste management at the village level.

Health education at the elementary school level represents a long-term investment in developing a stronger and more capable generation. By fostering a proper understanding from an early age, children are expected to build a resilient defense against various health threats. This community service program aims to broaden the knowledge and awareness of students at SDN 054945 Dogang Village, Gebang District, Langkat Regency, North Sumatra, regarding Clean and Healthy Living Behavior (known as PHBS). As a promotive and preventive strategy, PHBS is essential to instill from childhood to cultivate healthy habits and prevent various health disorders. This study utilizes a qualitative approach, applying the Miles and Huberman interactive analysis model. The activity, conducted on July 20, 2024, involved 77 fourth and fifth-grade students and followed three main stages: preparation, implementation, and evaluation. Socialization was carried out interactively through handwashing tutorial videos, physical exercises, PHBS-themed songs and rhythmic clapping, and Q&A sessions. The results indicated an improvement in students' understanding of various PHBS indicators, including handwashing habits, waste management, healthy food consumption, physical activity, growth monitoring, avoiding tobacco smoke, maintaining toilet cleanliness, and eradicating mosquito larvae. The active participation shown by the students reflects a heightened awareness of practicing PHBS within the school environment. In conclusion, this educational initiative has delivered a positive impact on student knowledge and holds the potential to foster a sustainable culture of clean and healthy living, both at school and in their daily lives.

The retail grocery business is an important part of the traditional market economy. However, most micro-businesses still face limitations in financial management and inventory control. This community service activity aims to improve the capacity of retail grocery businesses in Bolu Market, Tallunglipu District, through assistance with simple financial record-keeping and inventory management based on sales data. The implementation methods included observation, socialization, training, and direct assistance to business partners. The results of the activity showed an increase in the partners' understanding of the importance of financial recording and inventory, as well as their initial ability to implement daily business recording. This activity contributed to improving business efficiency and supporting the sustainability of micro businesses in traditional markets. Furthermore, business partners have demonstrated improvements in more structured inventory management, resulting in reduced waste and stock discrepancies. This initiative is expected to have a long-term impact on developing the capacity of micro-entrepreneurs in traditional markets.

Dairy goat farming holds significant economic potential as a rural enterprise alternative, driven by increasing market demand for goat milk, which is known for being low-allergen and highly nutritious. This article presents a case study on Okane Mochi Farm, a dairy goat farming unit located in Ngaglik Village, Gebang District, Purworejo Regency. This study aims to analyze the breeding management strategies, product innovation, and economic impacts generated by the farm. The method used is field observation and descriptive study of the farm's operations. Observations indicate that the success of Okane Mochi Farm is driven by three main factors: (1) Innovation in selecting superior breeds such as Anglo Nubian and Sapera for high milk productivity; (2) Implementation of strict housing management and hygiene standards to maintain milk quality; and (3) Product diversification through flavored pasteurized milk processing and the utilization of livestock waste into organic fertilizer (zero waste). The study concludes that the upstream-downstream integration model applied by Okane Mochi Farm can serve as a reference for sustainable rural economic empowerment models.

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.

This study investigates biomass-derived surface engineering of AISI 1020 steel for electromedical applications using galam wood charcoal and chicken bone waste as carburizing media. Surface modification is required to improve the mechanical performance of low-carbon steel, particularly in applications that demand high wear resistance and long-term durability. A pack carburizing approach was applied using various ratios of biomass-derived media at a treatment temperature of 800 °C for 2 hours. Chemical composition was analyzed using Optical Emission Spectroscopy (OES), surface hardness was evaluated using Micro Vickers hardness testing, and microstructural characteristics were observed using optical microscopy. The results show a significant increase in surface carbon content with increasing fractions of chicken bone powder, indicating its effectiveness as a carbon donor and diffusion promoter. The surface hardness increased from approximately 150 HV in the untreated condition to a maximum of about 860 HV in the treated specimen. Microstructural observations revealed the formation of a distinct carburized layer with increasing thickness and uniformity, consistent with enhanced carbon diffusion and surface strengthening. These findings demonstrate that biomass-derived surface engineering provides an effective and sustainable approach for improving the surface properties of low-carbon steel. The proposed method offers strong potential for environmentally friendly manufacturing of durable and reliable electromedical components.

This community service program aims to utilize Balinese orange peel waste into marketable jelly candy in Battu Winangun Village, Lubuk Raja District, Ogan Komering Ulu Regency. The implementation method included socialization, 2-day practical training, and production mentoring involving 30 participants from women's farmer groups, PKK mothers, and youth youth organizations. The results of the activity showed an increase in participants' knowledge from 15% to 92% about the economic potential of Balinese orange peel waste, with 85% of participants successfully producing good-quality jelly candy that met the criteria of chewy texture, balanced sweet-sour taste, and attractive bright color. This program successfully processed orange peel waste rich in natural pectin (18-25%) into a functional low-calorie product with a shelf life of 2-4 weeks. The program's impacts included the formation of independent business groups, a 25-30% reduction in organic waste, and increased public awareness of a sustainable circular economy. The final evaluation showed a 90% level of participant satisfaction, with 87% of participants interested in continuing independent production. In conclusion, this program effectively increases the added value of local agricultural products, empowers the community's economy, and creates social transformation toward a self-sufficient and environmentally conscious village.

This study aims to examine the impact of tourism activities on environmental sustainability and the culture of the Tengger tribe in Ngadas Village, Poncokusumo District, Malang Regency. Ngadas Village is one of the traditional villages located in the Bromo Tengger Semeru National Park area and is a growing natural and cultural tourist destination. The research method used is a qualitative approach with data collection techniques through observation, in-depth interviews, and documentation studies. The results of the study show that tourism activities have a positive impact in the form of economic improvement for the community and the preservation of several cultural traditions through tourist attractions. However, there are also negative impacts such as environmental degradation due to increased waste volume and land use change, as well as the commercialization of culture, which has the potential to diminish the sacred meaning of the Tengger tribe's traditions. This study recommends the need for sustainable and participatory tourism management, involving the indigenous community in decision-making so that environmental and cultural sustainability is maintained amid the development of the tourism sector.

This study aims to identify and minimize waste in the process of procuring Food & Beverage raw materials at Hotel PXY Jasa Bali using the Lean Inventory Management approach. Observations over one month showed that the total procurement cost reached 47% of the total revenue, exceeding the ideal limit of 35%. One of the main causes is the inefficient and lack of synchronization between divisions in the Rhapsody platform, which causes waste in the form of defects, delays, over-processing, and transportation. This study uses the Value Stream Mapping (VSM) method to map actual conditions and Process Activity Mapping (PAM) to identify the type of activity based on the waste category. In addition, root cause analysis is carried out using the Root Cause Analysis (RCA) approach. The mapping results showed that out of the total lead time of 598.44 minutes, only 278.49 minutes or 46.54% were value-added activities. This finding indicates that the procurement process is not yet efficient and needs optimization. Several recommendations were given to minimize waste, such as clearer division of tasks, improved communication with vendors, and the procurement of supporting facilities to reduce physical movement between divisions. The implementation of this lean service is expected to be able to increase the efficiency of the logistics process and reduce the company's overall operational costs.

MSMEs Traditional culinary MSMEs play a vital role in the Indonesian economy through job creation, income equality, and preservation of local culture. However, limited capital, raw materials, and labor, as well as unsystematic production planning, mean that MSME production decisions are still intuitive, leading to inefficiencies and suboptimal profits. A case study of MSME Sostang Tijang Bruno, a Sundanese cireng producer, shows that cireng production is still based on experience without clear calculations, resulting in a mismatch between production and demand and waste of raw materials. This study aims to optimize cireng production volume using the Graphical Linier Programming method to maximize profits by considering constraints on raw materials, working time, and market capacity. Data were obtained through observation, interviews, and documentation. The decision variables were the production volume of original chicken-filled cireng and spicy chicken-filled cireng. The analysis results showed an optimal production combination of 2.93 kg of original chicken-filled cireng and 0.53 kg of spicy chicken-filled cireng with a maximum profit of Rp499,000 per day. This method is expected to help MSMEs make more efficient and rational production decisions