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The use of renewable energy has become an essential solution to reduce dependence on limited fossil energy sources. Solar panels are an environmentally friendly alternative for generating electrical energy. This study develops a solar panel system based on the Internet of Things (IoT) to provide energy for electric water heaters. The system allows for the monitoring and control of energy usage through an IoT-based application, such as Telegram. The solar panels are connected to an ESP32-based controller system, which monitors sunlight intensity and battery charging status. The test results indicate that this system can provide sufficient energy for electric water heaters with optimal efficiency and reduce dependence on conventional energy sources. 

Tourism development in Aceh Tengah Regency has great potential to become a leading tourist destination, especially with the natural beauty of Danau Laut Tawar and the richness of local culture. The Tourism Office of Aceh Tengah Regency has implemented various strategies, including the empowerment of local communities, infrastructure improvements, and tourism promotion. However, significant challenges remain in the development of this sector, such as the lack of land legality documents, limited supporting facilities, and low creativity in the creative economy products. Based on the research, development focusing on community empowerment through training, improvements in physical and social infrastructure, and strengthening collaboration between the government, private sector, and local communities can enhance tourism appeal and provide positive economic impacts. In the future, community-based and sustainable tourism development will be the key to creating an environmentally friendly and sustainable destination. Through more coordinated strategic efforts, it is expected that the tourism sector in Aceh Tengah can grow rapidly and contribute to regional development.    

Vegetable ingredients are natural sources of active compounds that have the potential to be used as control agents for pathogenic microorganisms in various fields, including health and agriculture. This study aims to evaluate the synergistic effect between aloe vera (Aloe vera L.) and bandotan (Ageratum conyzoides L.) extracts on inhibiting the growth of pathogenic bacteria in different media. Aloe vera extract is obtained using the infundation method, while bandotan extract is obtained using the maceration technique. The concentrations tested were 30%, 45%, and 60% for each extract, as well as a combination of both. Testing was carried out on two main applications: as an antiseptic hand sanitizer by testing germ colonies using Plate Count Agar (PCA), and as a bacteria control Erwinia carotovora, the cause of carrot tuber rot, using the Path Ways Analysis test. The results showed that the combination of aloe vera and bandotan extracts had more significant inhibitory effectiveness than single extracts in both applications. A combination concentration of 60% gave the best results with a reduction in bacterial colonies of up to 90%. The mechanism of action of active compounds such as flavonoids, phenolics and saponins in this vegetable extract plays an important role in damaging bacterial cell membranes and inhibiting the metabolism of microorganisms. This research confirms the potential of using local plant materials as an environmentally friendly and economical solution for controlling pathogenic bacteria in the health and agricultural sectors.

This research investigates the potential of integrating waste heat recovery and geothermal exchange within district heating systems as a carbon-neutral energy solution tailored to tropical urban settings. Tropical climates present unique challenges for heating, ventilation, and air conditioning (HVAC) systems, including high humidity, temperature fluctuations, and increasing energy demands, particularly for cooling. This study aims to address these challenges by proposing a hybrid district heating system that combines renewable energy sources to improve energy efficiency and reduce carbon emissions. The methodology includes thermal and hydraulic modeling, performance simulation of the hybrid system under tropical climate conditions, and emission and energy efficiency analysis. The results indicate that the hybrid system significantly reduces energy consumption and carbon emissions compared to traditional heating systems, with waste heat recovery optimizing energy use and geothermal exchange enhancing system efficiency. The comparison with conventional systems and other environmentally friendly alternatives reveals that the hybrid system offers a cost-effective, sustainable solution for tropical urban areas. The study concludes that integrating waste heat recovery and geothermal exchange is feasible and can contribute to the creation of carbon-neutral cities. Future research should focus on optimizing geothermal systems in tropical climates and exploring further integration with other renewable energy sources to enhance system performance and sustainability.

Microplastic pollution, particularly from textile waste, has become a significant environmental concern, especially in urban runoff systems. These pollutants pose a considerable threat to water quality, aquatic life, and human health. Traditional wastewater treatment methods often fall short in addressing the complexities of microplastic contamination. This research explores the integration of advanced biodegradable polymer coatings with solar-powered textile waste treatment to reduce microplastic pollution in urban runoff systems. Biodegradable polymers, such as polylactic acid (PLA) and polyhydroxyalkanoates (PHA), are highlighted for their potential to efficiently filter microplastics while providing an eco-friendly alternative to conventional filtration technologies. By combining these materials with a small solar-powered unit, the prototype enables an off-grid, low-energy solution to treat textile wastewater in urban environments. The study includes testing the prototype in simulated urban runoff conditions with varying concentrations of microplastics, evaluating key performance indicators such as microplastic removal efficiency, energy consumption, and operational sustainability. Results demonstrate a significant reduction in microplastic concentration, indicating the effectiveness of biodegradable polymer coatings and solar-powered systems in treating urban runoff. The discussion addresses the feasibility of using local biodegradable materials, performance in real-world urban environments, and operational challenges such as maintenance and scalability. This innovative approach is compared with existing microplastic filtration methods, such as membrane filtration and adsorption, highlighting its advantages in terms of sustainability and cost-effectiveness. The findings suggest that this integrated system could offer a viable, low-cost solution for addressing microplastic pollution in urban drainage systems, with potential for widespread urban implementation.

This study aims to develop an intuitive and efficient smart home control system by utilizing hand tracking and speech recognition technologies. These technologies employ the OpenCV, Mediapipe, PyAudio, and Speech Recognition libraries to recognize hand gestures and voice commands in real-time. The system is developed using a Raspberry Pi connected to a webcam and microphone as input devices, and a relay to control electronic appliances. The results show a high accuracy rate at optimal light intensity for hand tracking and a specific distance for speech recognition. This system is implemented in an IoT environment to control devices such as lights and door locks. The research is expected to contribute to the development of smarter and more user-friendly smart homes.

Tourism development in Aceh Tengah Regency has great potential to become a leading tourist destination, especially with the natural beauty of Danau Laut Tawar and the richness of local culture. The Tourism Office of Aceh Tengah Regency has implemented various strategies, including the empowerment of local communities, infrastructure improvements, and tourism promotion. However, significant challenges remain in the development of this sector, such as the lack of land legality documents, limited supporting facilities, and low creativity in the creative economy products. Based on the research, development focusing on community empowerment through training, improvements in physical and social infrastructure, and strengthening collaboration between the government, private sector, and local communities can enhance tourism appeal and provide positive economic impacts. In the future, community-based and sustainable tourism development will be the key to creating an environmentally friendly and sustainable destination. Through more coordinated strategic efforts, it is expected that the tourism sector in Aceh Tengah can grow rapidly and contribute to regional development.

This study aims to analyze the implementation of circular economy in Micro, Small, and Medium Enterprises (MSMEs) in the Food & Beverage (F&B) sector. The focus of the research is on the implementation of circular economy practices that include waste management, use of sustainable raw materials, environmentally friendly packaging, energy and water efficiency, and food waste reduction strategies. The research method used a descriptive quantitative approach with a research instrument in the form of a questionnaire distributed through Google Form.

The purpose of this study is to design and build a garden fence made of wood and recycled bottles in an effort to develop an environmentally friendly and cost-effective solution. In addition to functioning as a room divider, this garden fence can also be used as a decorative component to add to the aesthetic appeal of the garden. This study examines the structural strength, material durability, and aesthetic value of the fence building using wood and recycled bottles. The method used in this activity is the ABCD method, the ABCD (Asset Based Community Development) approach method which is a mentoring method that prioritizes the utilization of assets and potentials around the community. This research method also evaluates the environmental impact and cost efficiency of using recycled materials. The results of the study show that a fence made of wood and recycled bottles can be a practical and attractive choice for a garden plan. This fence not only supports the management of plastic bottle waste, but also provides a smart solution that is financially efficient and affordable.

Max Cleaning, as one of the MSMEs engaged in shoe washing services, has gained the trust of the public thanks to the quality of the washing carried out. Not only does it offer Max Cleaning services, it also sells its products, namely cleaners. Max Cleaning needs to develop packaging for its shoe cleaning products because competition is tight and product packaging is increasingly attractive, useful and at low prices, so it is necessary to develop packaging design. The development of shoe packaging cleaning designs that focus on consumer satisfaction using the Quality Function Deployment (QFD) method lies in the need to understand and fulfill customer preferences and needs in depth. The research objective is to provide an improved design for shoe cleaning packaging products that suit customer needs. Data collection techniques used in research to obtain data from respondents using questionnaires. Based on 5 attributes that influence customer satisfaction, it has a high level of satisfaction and is needed by consumers, namely the unique shoe cleaner packaging product design influences the decision to buy" with a value of 3.39. Based on the analysis of raw weight, the attribute developed is an environmentally friendly packaging product. And packaging improvements have been added with detailed information on the ingredients, as well as how to use the shoe cleaner, adding to the value of the shoe cleaning product packaging. Added to this, the striking color of the logo design gives brightness and a unique impression to the packaging. Changing the material from previously 50% alcohol to 10% alcohol content, this is more effective and safe for the user's health and does not damage the shoe material.

Organic fertilizers contain organic materials such as compost, manure, or other organic waste materials. When organic fertilizers are applied to the soil, they provide an abundant source of nutrients, including nitrogen, phosphorus, and potassium, as well as essential micronutrients. The community service activity program aims to empower farmers with the knowledge and skills to make organic fertilizers from local materials, which not only lower production costs but also improve soil quality and crop yields. The community service activity with the theme "Assistance and Making Organic Fertilizers in Reducing Fertilizer Costs for Farmers in Rowo Gempol Village, Lekok District, Pasuruan Regency" Through the Participatory Action Research method which includes preparation, processing, application, and evaluation, this program has succeeded in improving soil quality and supporting plant growth in the campus green area. Organic fertilizers, produced from campus organic waste such as dry leaves and food scraps, increase soil nutrient content and plant health, and reduce the negative impacts of synthetic chemicals. This activity also involves students in the process of processing and applying fertilizers, providing practical experience and raising awareness of the importance of sustainable agriculture and environmental management. The evaluation results showed a significant positive impact on soil quality and plant growth, with more fertile soil and healthier plants. In addition to the ecological benefits, the program plays an important educational role, by increasing students' understanding of environmentally friendly practices and organic farming skills. The success of this model is expected to be replicated in other villages. so that the benefits of this program can be felt more widely and support the creation of more sustainable agriculture.

This activity aims to strengthen the local economy in West Payakumbuh, Payakumbuh City, West Sumatra, by implementing community service related to stingless bee beekeeping socialization. In addition to promoting environmental conservation, this program seeks to raise community awareness of stingless bee beekeeping's potential as a sustainable alternative source of income. Technical instruction in stingless bee beekeeping, processing bee products including honey and propolis, and marketing these goods are used to carry out socialization activities. The findings demonstrated the community's strong passion and ability to successfully implement stingless bee beekeeping techniques, particularly among farmers and breeders. Products from stingless bee bees also have a lot of commercial potential and can lower reliance on the traditional economic sector while also enhancing community welfare. Micro-enterprises based on bee products can also be developed thanks to this training, which should hasten the sustained economic empowerment of communities. In general, this service was successful in promoting the establishment of an eco-friendly company and contributing to the rise in the income of Payakumbuh City residents.

Socialization and education about Green Human Resource Management (GHRM) are important to be implemented in MSMEs, especially in the aluminum craft sector, to encourage environmental desire and efficiency. In Tanjung Atap Barat Village, most aluminum craftsmen still use practices that are less environmentally friendly, such as less than optimal waste management and the use of raw materials that are not fully based on recycling. Therefore, a GHRM approach is needed that integrates the principle of desire through increasing the ability, motivation, and opportunities for craftsmen to contribute to preserving the environment. This study aims to understand and analyze the implementation of Green Human Resource Management (GHRM) in aluminum craft MSMEs in Tanjung Atap Barat Village, with a focus on preserving human resources that support environmental sustainability. The method used in this study consists of three main stages: socialization, education, and evaluation. The results of this study indicate that the socialization and education of Green Human Resource Management (GHRM) carried out on aluminum craftsmen in Tanjung Atap Barat Village with the ability-motivation-opportunity (AMO) approach successfully introduced GHRM principles such as energy efficiency, use of recycled materials, and waste management.

The implementation of the Agile method in designing the UI/UX for the student attendance information system at MTS Muhammadiyah 01 Medan resulted in a responsive, efficient, and user-friendly interface design. The Agile approach allowed for iterative and adaptive design development, utilizing user feedback for refinement at each stage. The design process included requirements gathering, design, testing, and evaluation with a focus on user experience. The resulting UI/UX design makes it easier for teachers to manage attendance, replacing the inefficient and error-prone manual methods. This implementation also supports the digitalization of administrative processes in the educational environment, improving accessibility, efficiency, and user comfort. With an intuitive design that meets user needs, this system is expected to be widely adopted, having a positive impact on data management in schools, and serving as a model for similar development in the future.

Krian Regency is famous for its forest products, especially teak trees, whose valuable wood is often used to make furniture. This research aims to develop a process for making environmentally friendly paper from dried teak leaves using the Participatory Action Research (PAR) method. The PAR approach was chosen so that the local community could be actively involved in every stage of the research, from collecting materials, processing teak leaves, to the paper making process. This method is implemented through several stages, namely problem identification, action planning, implementation, observation and evaluation. Other parts of teak trees, such as leaves, have not been fully utilized. Young teak leaves are widely used as food wrappers and to make natural dyes. Teak leaves are abundant in the dry season but are not widely used. Dried teak leaves are a source of natural fiber that is cheap and easy to obtain. This investigation will process dried teak leaf waste into processing paper. This activity uses the PAR method. Teak leaves are processed into pulp using NaOH and soda process. Art paper is made from paper pulp. Researchers must conduct more research to find out that teak leaves as a natural resource can increase value and sustainability. Products made from teak leaves can not only increase the income of people in the area, but can also be used to improve environmental sustainability. The community can help reduce excessive tree felling and maintain environmental balance by utilizing natural waste.

This study aimed to enhance sustainability awareness through eco-friendly creativity by introducing bamboo weaving training to elementary school students at SDN 3 Karangkobar. The training integrated cultural heritage with practical skills, emphasizing environmental conservation. The program involved sixth-grade students in hands-on activities, teaching them to transform bamboo into functional crafts. Findings revealed high enthusiasm from both students and teachers, highlighting the program's potential to foster creativity, entrepreneurial spirit, and environmental responsibility. The training also underscored the importance of utilizing local resources and preserving traditional crafts. Despite challenges such as limited materials and facilities, this initiative demonstrated the feasibility of embedding sustainability principles in education. Recommendations include curriculum adjustments to integrate local wisdom-based art education and increased support for creative, environment-focused learning methods.

EcoCleanzyme Wash is an innovative dishwashing liquid based on ecoenzyme, a liquid derived from the fermentation of organic waste such as fruit peels, vegetable scraps, brown sugar, and water. This product offers an environmentally friendly solution for household needs while addressing the challenges of suboptimal organic waste management. The three- month ecoenzyme fermentation process produces a liquid rich in natural enzymes with antibacterial, antifungal, and insecticidal properties, capable of breaking down harmful organic compounds. EcoCleanzyme Wash provides a safer alternative compared to conventional dishwashing liquids, which often contain harmful chemicals that can pollute water and soil. This product not only effectively cleans utensils but also supports the concept of sustainability by utilizing household organic waste. Additionally, EcoCleanzyme Wash helps reduce environmental pollution, often caused by improperly managed household waste. In Indonesia, organic waste constitutes the largest portion of household waste, which, if left unmanaged, can contaminate water, soil, and air, leading to various health issues such as diarrhea and skin infections caused by pathogenic microorganisms. The use of ecoenzyme in EcoCleanzyme Wash represents a tangible step toward promoting the concepts of reuse and sustainable waste management, aligned with government regulations on waste handling. This product also contributes to reducing negative impacts on ecosystems and raising public awareness about the importance of managing organic waste. This research aims to provide a detailed guide on the production process of ecoenzyme-based dishwashing liquid, covering the utilization of organic raw materials, fermentation steps, and product formulation. It is expected that the findings of this research can serve as a reference for the development of other environmentally friendly products and encourage innovation in household waste management. EcoCleanzyme Wash is a progressive step in creating a product that not only fulfills household needs but also positively impacts the environment.

Sexual harassment in academic settings often goes uncovered due to unequal power relations between perpetrators and victims. This phenomenon is of particular concern on Malang campuses, where victims feel intimidated and do not have a safe space to speak out. This research aims to explore how power relations contribute to the occurrence of sexual harassment and its impact on victims in the academic environment. A qualitative approach was used with a case study method at several universities in Malang. Data were collected through in-depth interviews with victims, witnesses, and campus administration, and analyzed using thematic analysis techniques. The results showed that harassers often utilize positions of authority, such as lecturers, seniors, or campus staff, to commit acts of harassment. Victims, who are mostly students, are reluctant to report cases for fear of negative impacts on their education and career. The findings also reveal that the lack of strict campus policies and victim-friendly reporting mechanisms exacerbate the situation. This research highlights the importance of reforming campus policies and engaging the academic community in creating a safer and more equitable environment. This research suggests that universities in Malang need to strengthen reporting systems, introduce sexual harassment prevention training, and improve the structure of more equal relationships between students and faculty.

The utilization of natural resources in the current era is an important concern, especially in supporting environmental sustainability. The development of awareness of environmental issues also affects the economic cycle, especially the production process of environmentally friendly goods. The running of environmentally friendly goods production in Indonesia is evidenced by the existence of various product innovations that utilize waste or natural materials, one of which is JEcoware. The existence of JEcoware is also a means of supporting business actors to carry out sustainable product innovations. One of the popular JEcoware product innovations is the utilization of teak leaves and used cardboard. The type of method used is descriptive observation with a qualitative approach. All data for this observation was obtained through literature reviews by analyzing information from various sources, as well as through the analysis of production practices carried out periodically at JEcoware. Based on the results of the discussion, it is known that the utilization of teak leaves is influenced by the season and the availability of materials to produce JEcoware products. The change of seasons also affects the quality of teak leaves due to irregular rainfall. Therefore, seasonal changes significantly impact the quality of raw materials and the JEcoware production process, ultimately influencing the production of high-quality and sustainable products.

Crop productivity is one of the key components in supporting the sustainability of the agricultural sector and global food security. However, challenges such as soil degradation, dependence on chemical fertilizers, and climate change necessitate more innovative and environmentally friendly approaches. Soil microorganisms play a significant role in improving crop productivity through biological mechanisms such as nitrogen fixation, organic matter decomposition, mycorrhizal symbiosis, and the production of bioactive compounds that protect plants from pathogens and abiotic stress. Microbiology-based biotechnology approaches, such as the use of biofertilizers and biopesticides, offer environmentally friendly solutions to address modern agricultural problems. This research aims to review the role of microorganisms in improving crop productivity, focusing on the application of microbiology-based biotechnology. The research method used is a literature study or meta-analysis of relevant literature and research in the last 10 years. The results of the discussion show that microorganisms such as Rhizobium, Azospirillum, Trichoderma, and mycorrhiza have a major contribution in improving soil fertility, crop yields, and plant resistance to environmental stress.