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The educational activity on the implementation of Clean and Healthy Living Behavior (PHBS) with a focus on the practice of washing hands and brushing teeth at SDN 07 Jati Mulya, Kerinci Kanan District, Siak Regency, aims to improve students' knowledge and skills in maintaining personal hygiene from an early age. This program was carried out for two days by applying educational, participatory, and demonstrative methods involving all students from grade I to grade VI. The learning media used is in the form of educational videos and the song "6 Steps to Wash Hands WHO 2024" to attract students' attention and facilitate the understanding of the material in a fun way. The results of the activity showed a significant improvement in students' understanding and skills related to the correct hand washing and brushing steps. In addition, students look more enthusiastic, actively ask questions, and begin to get used to doing cleaning practices independently in daily activities at school. The role of teachers as companions and support for school facilities, such as the availability of clean water and cleaning tools, has been proven to have a great influence on the success of activities. Therefore, integrated, planned, and sustainable PHBS education in the school environment is considered effective in forming healthy living behaviors and preventing diseases from elementary school age.

Increasing rice production is a national strategic priority given its role in maintaining food security and economic stability in the community. This study aims to analyze strategies for increasing rice production in Indonesia through a literature review approach based on relevant scientific articles. The analysis was conducted to identify the main factors that affect rice productivity and to formulate comprehensive strategies covering aspects of cultivation technology, land and water management, institutions and extension, production risk mitigation, and socioeconomic factors. The results of the study show that modern cultivation technology, especially the use of new superior varieties, the legowo planting system, and balanced fertilization, are the main foundations for increasing productivity. However, the success of technology implementation is largely determined by stable access to water, coordination of farmer institutions, intensive extension support, and the availability of capital and supporting infrastructure. Production risks due to climate change and pest attacks also have a significant impact on yield stability, requiring integrated mitigation strategies such as simultaneous planting and strengthening of integrated pest management (IPM). Overall, this study confirms that rice production enhancement strategies must be integrative, adaptive, and sustainable by strengthening the synergy between technology, institutions, and supporting policies. These findings are expected to serve as a basis for formulating more effective agricultural policies to boost national rice production.

Production quantity planning is a crucial component in the bottled water industry (AMDK) to ensure that consumer demand is met efficiently. Inaccuracies in determining the amount of production can lead to overproduction and supply shortages, which ultimately leads to increased operational costs and decreased customer satisfaction. This study applies the Sugeno fuzzy logic method to predict the amount of production based on two main variables, namely weekly demand and raw material stock. The analysis stages include the fuzzification process, the preparation of the rule base, inference using the zero-order Sugeno method, and defuzzification using the Weighted Average (WA) method. The data used is synthetic data that represents the operational conditions of the medium-scale bottled water industry. The results show that the Sugeno fuzzy system is able to produce production predictions that are adaptive and responsive to fluctuations in demand and stock availability. This model provides consistent and stable output, so it can help companies in determining the optimal production amount. These findings confirm that Sugino's fuzzy approach can be an effective decision support tool in bottled water production management, especially in the face of uncertainty and variability in market demand.

This study evaluates the retrofit design of the Semat weir on the Kali Gawe in Jepara Regency. The retrofit aims to adjust the weir’s hydraulic capacity to accommodate estimated flood discharges while ensuring the structure’s stability under applied loads. In the agricultural context, adequate water availability for irrigation directly affects crop yields; conversely, the rainy season often increases river flow and flood risk. Irrigation structures such as weirs are therefore required to raise river water levels to divert flow into irrigation channels and to regulate water distribution. Flood discharge estimates were derived from precipitation data and watershed (drainage basin) characteristics. Flood hydrograph planning is a critical design step for the weir. Log-Pearson Type III analysis was used to determine probable precipitation values for several recurrence intervals. Those design precipitation values were then converted into design flood discharges using synthetic unit hydrograph methods, specifically the Snyder, Nakayasu, and Gamma HSS approaches. Employing the Gamma synthetic unit hydrograph for the 50-year return period (Q50) produced a design flood discharge of 2,536.52 m³/s for that recurrence interval. Structural stability analyses of the redesigned weir indicate safety factors well above customary thresholds: overturning resistance factor = 11.6 (required ≥ 1.5), sliding resistance factor = 4.80 (required ≥ 2.0), and piping (internal erosion) factor = infinite (required ≥ 4). All evaluated stability parameters therefore satisfy standard safety criteria.

The black sea cucumber (Holothuria atra) holds significant ecological and economic value in tropical marine ecosystems, including those of Maluku, Indonesia. This study aimed to estimate population density, spatial distribution patterns, and their relationship with environmental conditions along the Haenesai coast, Hulung Village, Taniwel District, West Seram Regency. Sampling was carried out using the belt transect method (50 m × 2 m) at three stations with three replications, while physicochemical parameters of seawater (temperature, salinity, pH, dissolved oxygen, and transparency) were measured in situ. A total of 96 individuals of H. atra were recorded, with an average density of 10.6 ind/100 m². Station I exhibited the highest density (13 ind/100 m²), whereas Station II showed the lowest (9.3 ind/100 m²). Distribution patterns were generally uniform at Stations I and II, while Station III displayed a clustered pattern. These variations are likely influenced by differences in water transparency, dissolved oxygen, and substrate heterogeneity that affect food availability. Overall, environmental conditions remained suitable for H. atra, although evidence of exploitation pressure from local harvesting was observed. Ecologically, H. atra plays a critical role as a bioturbator, maintaining sediment quality and coastal ecosystem stability. This study highlights the need for regulated harvesting, habitat protection, and aquaculture development as strategic measures for the sustainable management of sea cucumber resources in Maluku.

Diarrhea remains a significant health problem among children, especially school-aged students. This study aims to identify factors associated with the occurrence of diarrhea in students. A literature review method was used by analyzing ten relevant scientific articles published within the last five years (2019–2024). Significant factors influencing diarrhea incidence include handwashing habits, environmental sanitation conditions such as availability of latrines and clean water, nutritional status, immunization, and health knowledge. The findings indicate that diarrhea prevention requires a multidimensional approach involving education on healthy behaviors, improvement of sanitation facilities, and family empowerment through nutrition and immunization. These results are expected to serve as a basis for schools, parents, and government in designing effective diarrhea prevention programs for students.

Bottled Drinking Water (AMDK) “VOCA” is produced by the Teaching Factory Water Treatment, Vocational School of Diponegoro University, to meet the hydration needs of the academic community. However, several issues have been identified, such as packaging defects, uneven product distribution, and stock shortages during peak demand, particularly at large-scale campus events. These issues may affect consumer satisfaction with the VOCA product. This study aims to analyze the influence of product availability, distribution, and product quality on consumer satisfaction. The research uses a quantitative approach with a survey method involving respondents who have consumed VOCA. The sampling technique applied was purposive sampling, and the data were analyzed using multiple linear regression. The results show that all three variables—product availability, distribution, and product quality—have a positive and significant effect on consumer satisfaction, both partially and simultaneously. Among them, product quality is the most dominant factor. These findings highlight the importance of consistently maintaining product quality, improving distribution systems, and ensuring stock availability to meet consumer expectations and enhance the competitiveness of VOCA on campus.

Oil palm is a leading commodity that makes a major contribution to Indonesia’s economy, yet a significant productivity gap remains between actual and potential yields. A principal cause is suboptimal water management, which leads to flooding during the rainy season and drought in the dry season. This study develops a Conceptual Design (CD) for water management to map existing problems, analyse root causes, formulate improvement measures, and present a macro-level cost estimate for the study site. The research was conducted at an oil palm plantation in East Kalimantan anonymized as “PT XYZ.” The site was selected due to recurrent flooding and a recent change in ownership that limited data availability, making it well-suited for a CD-stage assessment. The objective is to identify water management issues and propose effective recommendations. A quantitative approach integrates primary data from field observations and measurements with secondary data. The analyses cover flood problem assessment, Water Management Zoning (WMZ/ZPA), rainfall analysis, hydrology, hydraulics, improvement proposals, and macro cost estimation. Results indicate that challenges are driven by swampy land conditions and inadequate channel and hydraulic structure capacity. Micro-watershed delineation using DEMNAS identified four ZPAs totalling 479–4,061 ha. Design rainfall was derived from CHIRPS satellite data using a log-normal distribution. Hydrologically, peak discharges range from 3.87–22.58 m³/s for the 2-year return period and 4.46–26.31 m³/s for the 5-year return period. Hydraulically, the proposed dimensions for rivers, outlet drains, carrier drains, and field-edge drains are 4×3×2 m to 9×7×3 m (T=2 years) and 4×3×2 m to 10×8×3 m (T=5 years), while collection and main drains are proposed at 3×2×2 m for both return periods. The total estimated investment for the 5-year design scenario is IDR 27,999,263,000.

Concrete roof tiles are an important material in building construction, particularly for roofing work, due to their advantages in terms of strength, durability, and material availability. This study aims to analyze two main physical characteristics of concrete roof tiles, namely bending load and water absorption, using a literature review approach from various previous studies. Bending load refers to the material's ability to withstand bending forces, while water absorption describes the material's capacity to absorb and store water through its pores. These two properties significantly influence the quality and durability of roof tiles in facing external environmental conditions, especially wet-dry cycles and mechanical loads. The results of the literature review indicate that the use of waste as an aggregate substitute in concrete mixes can significantly improve the performance of concrete roof tiles. For example, research using broken roof tiles and ceramic waste as aggregate substitutes successfully increased flexural strength to a range of 12.5–15.0 MPa. Meanwhile, variations in water absorption were recorded in the range of 4%–8%, depending on the material composition and production method. This proves that the use of recycled materials not only supports sustainability but also improves the mechanical and physical properties of concrete roof tiles. Overall, this study underscores the importance of material innovation in concrete roof tile production, particularly utilizing waste as an alternative aggregate. However, further research is needed to explore the best combination of materials and production techniques for producing high-quality, efficient, and environmentally friendly concrete roof tiles.

Community Service Program (KKN) is one of the community engagement activities that involves students in contributing directly to community empowerment and sustainable development. The KKN program implemented in Candinegoro Village focused on the socialisation and application of micro-scale catfish farming technology as an effort to support food security through city farming initiatives. This study employed a qualitative descriptive approach with a participatory method, in which students acted as facilitators, trainers, and companions for the community throughout the program. The activities included socialisation, technical training, and mentoring related to catfish cultivation, covering aspects such as the selection of superior seeds, effective feed management, water quality monitoring, and the innovative use of plastic drums as alternative farming media. The results showed a significant increase in community knowledge and practical skills in fish farming, alongside a growing interest in developing post-harvest innovations such as processed catfish products to enhance added value and income. Furthermore, the program strengthened community awareness of the importance of sustainable urban farming practices as a solution to limited land availability. Overall, this program not only improved community capacity in aquaculture but also promoted local food self-sufficiency and economic resilience, in line with the government’s Asta Cita agenda to strengthen national food security and community empowerment.

This study aims to analyze the development strategy of vannamei shrimp (Litopenaeus vannamei) cultivation business in the intensive pond system at CV Jaya Tirta Vannamei, Probolinggo, East Java. The research applied a qualitative descriptive approach combined with SWOT analysis to evaluate both internal and external factors affecting the business. Data were obtained through observation, interviews, and documentation, then processed to generate alternative development strategies. The results show that CV Jaya Tirta Vannamei possesses strong internal resources such as experienced human resources, reliable production facilities, and good management capabilities. Externally, the company benefits from the rising demand for vannamei shrimp in domestic and global markets, the availability of modern aquaculture technology, and supportive government policies. Nevertheless, some challenges exist, including fluctuating shrimp prices, vulnerability to disease outbreaks, and relatively high operational costs, which may influence business continuity if not addressed effectively. Based on the SWOT analysis, the most appropriate development strategy is the S-O (Strengths–Opportunities) strategy, with an alternative strategy score of 3.72. The recommended strategies are: (1) increasing shrimp production through the adoption of advanced and sustainable cultivation technology, (2) developing and maintaining a reliable water quality management system to enhance productivity, (3) utilizing skilled human resources to strengthen innovation in cultivation techniques, and (4) ensuring the availability of sufficient and quality feed to support continuous production growth. In conclusion, implementing the S-O strategy provides an effective pathway for CV Jaya Tirta Vannamei to optimize its internal strengths in response to external opportunities. By improving technology application, strengthening resource utilization, and enhancing production management, the company can secure competitive advantage, increase productivity, and ensure long-term sustainability in the rapidly growing aquaculture industry.

The management of incoming and outgoing mail at the Situbondo Technical Implementation Unit (UPT BLK) plays a crucial role in supporting the effectiveness of administrative activities. Currently, the process of recording letters is carried out manually using an agenda book, which is considered inefficient, makes searching for archives difficult, and takes a long time. These problems encourage the implementation of an information system that can facilitate faster, more structured, and more accurate processing of letter data. This study proposes the development of a computer-based information system using the waterfall method in the Software Development Life Cycle (SDLC). The data collection process is carried out through direct observation and interviews with administrative staff, so that system requirements can be clearly identified. The results of this study are an information system design with a simple, user-friendly, and easy-to-operate interface, so that employees can quickly understand the flow of use. The system developed allows the process of recording, archiving, and tracking letters to be more organized, practical, and efficient compared to previous manual methods. In addition, this system is also able to reduce the potential for human error in recording and accelerate the presentation of information when needed for administrative purposes and decision-making. Other advantages offered are easy data access and the availability of reliable, accurate, and timely information. With this system, administrative performance at the Situbondo Technical Implementation Unit (UPT BLK) is expected to significantly improve, both in terms of time efficiency, service speed, and orderliness in managing documents.

Clean water is a basic human need to achieve a healthy standard of living. Human survival is greatly influenced by the quality of water and the availability of water in sufficient quantities. In Keramasan Village, there are still many people who have bad habits in providing clean water. People use the river as a place to bathe, wash clothes, wash dishes and throw away garbage.The level of knowledge, attitudes and actions of the community regarding the provision of clean water in Keramasan Village, Kertapati District, Palembang City.This type of research is descriptive research with a cross-sectional design. The population in this study were 159 families living in RT 11 and RT 12 in Keramasan Village. The total sample of respondents in this study was 67 families. Sampling was carried out using a random sampling technique, which aims to ensure that the sample can represent all families.From the results of the study on the provision of clean water, the level of knowledge of 46.3% of respondents had a low level of knowledge, in contrast to the attitude of 67.1% of respondents showing a good attitude. and 59.7% of respondents have poor actions regarding the provision of clean water.From the results obtained, it can be concluded that the community in Keramasan sub-district regarding the provision of clean water, at the level of knowledge, most respondents still have a low level of knowledge, most respondents already have attitudes in the good category, and most people have actions in the bad category.

This research is motivated by the potential of the waters of South Palabusa, Buton, as an ideal habitat for pearl oyster cultivation. This region has ecological advantages that can support the growth of oysters producing high-value pearls. However, pearl production is still strongly influenced by the application of nucleus implantation techniques and the condition of the aquatic environment. Therefore, this study aims to determine the effect of nucleus implantation on pearl growth and quality and identify environmental factors that play a significant role. The research method used is descriptive quantitative, with subjects being Pteria penguin oysters cultivated by the local community for a period of one month. The main parameters observed included the oyster survival rate, pearl size growth, and the quality of the resulting nacre. The findings provide valuable insight into how nucleus implantation can optimize pearl farming practices. The results showed that oysters implanted with nucleus implants had a survival rate of between 85–90%. Pearl diameter growth reached 1–2 cm per month, with a thicker nacre layer and brighter color than oysters without nuclei. Environmental factors, such as water temperature of 28–30°C, salinity of 30–35 ppt, pH 7.5–8.5, moderate water currents, and high plankton availability, have been shown to support successful cultivation. These environmental factors act as natural enhancers that improve pearl quality and survival rates. The findings of this study imply that the application of appropriate nucleus implantation techniques, accompanied by good environmental management, can increase pearl yield and quality. This not only provides significant economic benefits for cultivators but can also serve as a basis for developing sustainable pearl cultivation strategies in potential Indonesian waters. Thus, sustainable pearl aquaculture can become a promising sector for local communities.

Small-scale Hydropower Plants (HPP) are an effective renewable energy alternative to meet electricity needs in remote areas. This study aims to develop and test a small-scale HPP model using a 24-volt DC generator as the main component. The development process involves analyzing water flow rates, head height, and the conversion of mechanical energy into electrical energy. The 24-volt DC generator was chosen due to its availability, high efficiency, and ease of integration with energy storage systems.This small-scale HPP model is expected to provide a reliable electricity solution for households or small communities, particularly in areas not yet connected to conventional power grids. This study also paves the way for further development, especially in optimizing design and utilizing more efficient components. With a generator capacity of 24 volts, the voltage produced will tend to be stable compared to a generator with a capacity of 12 volts. So that this study is able to provide an accurate impact given by the water discharge that drives the.

The existence of clean water is very important because clean water is a basic need for human life and the environment. The availability of abundant clean water is certainly an indicator of welfare, public health, and environmental sustainability. The Surakarta City Regional Drinking Water Company as a provider of clean water services to the community is carried out in accordance with applicable regulations in order to realize clean water services that are decent, equitable, and sustainable. This study aims to determine the role of the Surakarta City Regional Drinking Water Company in implementing the provision of clean water to meet the needs of the community. This research method uses an empirical legal research method. Based on the results of the study, it shows that the implementation of drinking water provision by the Surakarta City Regional Drinking Water Company is not entirely fair and equitable to the community. This is influenced by several obstacles faced, including unstable water quality, less than optimal water continuity, damage to water pumps, and leaks in the pipe network.

Manual stock management systems are still commonly used in electrical equipment sales businesses, often leading to problems such as inaccurate data recording, delayed reporting, and potential data loss. To overcome these issues, a web-based inventory management information system was developed to automate the recording of incoming goods, outgoing goods, damaged items, and lost items. A case study was conducted at Toko Dhanisa Mandiri Jaya, which previously relied on manual bookkeeping using physical logs. The system was developed using the Waterfall method, involving stages such as requirements analysis, system design, implementation, testing, and maintenance. Data collection was carried out through observation, interviews, and literature review. The system includes key features such as inventory data management, transaction processing, reporting, and user management. The implementation results indicate improved operational efficiency, reduced recording errors, and the availability of real-time inventory data to support managerial decision-making. This system is expected to help the store modernize its business processes with better accuracy and control.

Changes in land surface temperature are one of the important indicators in monitoring global environmental change. In the last decade, increasing surface temperatures have become a global concern, as they have the potential to affect ecosystems, air quality, water availability and human health. In addition, increasing land surface temperature also has a direct impact on the urban heat island phenomenon, which can worsen environmental conditions in urban areas. In this context, analyzing periodic changes in land surface temperature is important to understand the patterns and factors that influence these changes. The objectives in conducting this research, namely: Analyzing the land surface temperature, Creating a regional land surface temperature map and Analyzing changes in land surface temperature from the land surface temperature map of Pariaman City in 2015, 2019, and 2023. Based on the results of the analysis of changes in land surface temperature using Landsat 8 OLI/TIRS images in 2015, 2019, and 2023, it was found that there were significant variations in temperature changes in several areas. Landsat 8 image data is processed through several stages, starting from converting Digital Number (DN) values to spectral radians, brightness temperature, to estimating Land Surface Temperature (LST) in Celsius units. The analysis shows that there was a significant increase in land surface temperature during the period, especially in urban and coastal areas. In 2015, the majority of areas had temperatures of 20°C-24°C, while in 2019 it shifted to 24°C-28°C, and in 2023 it was dominated by temperatures of 28°C-32°C and above 32°C. These changes reflect a significant local warming trend, influenced by human activities and land use change. This research is expected to contribute to the understanding of environmental dynamics and support spatial planning that is more adaptive to climate change.

This study explores the possibility of extraterrestrial life by examining environmental factors that could support survival, such as the availability of liquid water, a balanced atmosphere, and access to energy. The investigative approach was carried out through the integration of various data sources, including telescope observations, spacecraft exploration, and simulation modeling of planetary climate conditions. The findings reveal that a number of exoplanets within the habitable zone have environmental parameters that could potentially support life, although further research is still needed to uncover the biochemical mechanisms and adaptability of life in unusual environments. This study makes an important contribution to the development of astrobiology and expands the opportunities for exploring life beyond our planet, while offering a new understanding of the possibility of life in the vast universe.

The pH value parameter in the mineral acid water of a coal mining company in South Sumatra is below the set environmental quality standards. The results of measuring the pH value using a pH meter at the inlet are 4.9 which is still below the environmental quality standard of 6-9. Therefore, it is necessary to make efforts to manage the environment before water is discharged into water bodies, one of which is by utilizing kiambang plants as phytoremediation agents in neutralizing mine acid water. This study aims to analyze changes in mine acid water quality and analyze the effectiveness of mine acid water neutralization. The initial quality of mine acid water for pH parameters was 4.9 TDS of 376 mg/l, Fe of <0.1 mg/l, and Mn of 3 mg/l. After the phytoremediation process, the water quality change for pH parameters was 6.6 and Mn was 0.05 mg/l. The neutrality effectiveness of mine acid water increased the pH by 34.69% and the effectiveness of reducing Mn levels by 98.33%. This kiambang plant can be a recommendation for phytoremediation agents for companies considering its availability around the company