Publication Search

Soil fertility is a key element in the sustainability of agricultural systems that support global food security. One important soil microorganism that plays a role in improving soil fertility is Rhizobium, a bacterium capable of biological nitrogen fixation through a symbiotic relationship with leguminosae plants. This bacterium not only contributes to increasing soil nitrogen availability by 30-50% but also helps reduce dependence on synthetic nitrogen fertilizers, which has implications for reducing greenhouse gas emissions. Nonetheless, the effectiveness of Rhizobium is strongly influenced by environmental conditions such as pH, salinity, and chemical pollutants, which can inhibit its symbiotic ability. Technological innovations, such as nano-based formulations and the development of superior strains, offer solutions to improve the efficiency of Rhizobium, but challenges such as high costs and lack of policy support remain. In addition, the widespread use of Rhizobium inoculants may disrupt the balance of the soil microbial ecosystem, requiring further research. Therefore, integration of technology, policy and farmer education is needed to optimally utilize the full potential of Rhizobium while mitigating environmental risks, to support a more sustainable agricultural system.

This paper presents an IoT-enabled dual-axis solar tracking system that integrates  a Kalman filter and a Proportional-Integral-Derivative (PID) controller to enhance tracking accuracy, energy efficiency, and operational stability. Addressing the ongoing challenge of maxi- mizing photovoltaic (PV) panel output, the proposed system leverages an ESP32 microcontroller and the Blynk platform to provide real-time monitoring, remote parameter adjustments, and flexible connectivity. Light Dependent Resistor (LDR) sensors measure sunlight intensity from multiple directions, while MG90S servo motors dynamically adjust the panel’s azimuth and elevation. The Kalman filter refines noisy sensor data to yield precise sun position estimates, enabling the PID controller to respond quickly and accurately to deviations in panel orientation. Through extensive testing conducted over several days, including both clear and partially cloudy conditions, the system achieved an average Root Mean Square Error (RMSE) as low as 1.2° under clear skies and maintained RMSE below 2.0° even under partial shading. Compared to a fixed-panel baseline, daily energy harvesting improved by approximately 43%. These results confirm that advanced estimation and control algorithms, when combined with IoT functionali- ties, significantly outperform simpler tracking methods and static installations. Furthermore, the low-cost, compact design and user-friendly interface facilitate practical deployment in a range of scenarios, including small-scale and off-grid installations. By ensuring continuous alignment of the PV panel with the sun, the system not only increases overall energy capture but also reduces maintenance requirements through remote oversight. This research thus offers a robust, scalable approach to improving solar energy utilization in diverse and evolving environmental conditions.

Green Management has become an important strategy for companies to face environmental challenges while increasing competitiveness in the global market. This study aims to analyze the implementation of Green Management as a strategic approach in increasing the company's competitive advantage. The research method used is a literature review of various relevant previous studies, including the concept of Green Management, its impact on operational efficiency, product innovation, and corporate image. The results of the analysis show that the adoption of Green Management contributes significantly to reducing operational costs through energy efficiency and waste management. In addition, companies that implement sustainable practices succeed in creating added value for consumers, increasing customer loyalty, and strengthening market positions. This study also identifies several challenges, including initial implementation costs and organizational resistance, which can be overcome through government policy support and increasing environmental awareness among stakeholders. Thus, Green Management not only supports environmental sustainability goals but also provides strategic advantages for companies in the long term.

Graphene is a two-dimensional lattice made of a single carbon atom and has extraordinary mechanical, electrical and thermal properties. These properties make it a very important material for a variety of applications, including energy management and electronics. This research adopts a systematic literature review approach to evaluate the role of graphene in improving battery performance and environmental sustainability. The results show that graphene significantly improves the performance of lithium-ion and lithium-sulfur batteries as well as sodium and magnesium-based batteries. In addition, graphene also has great potential for environmental applications such as water purification and pollutant adsorption. However, challenges such as production costs, toxicity, and scalability still need to be overcome for wider adoption.

This study aims to analyze the influence of green accounting in carbon tax management in multinational companies in the manufacturing sector. Green accounting is an accounting approach that includes environmental asppects in finansial reporting, aiming to reduce environmental costs and support corporate sustainability. Using quantitative metodts, this study analyzed data form the sustainability report of five manufacturing companies listed on the IDX in 2022. The result of thr analysis show that carbon tax does not have a significant influence on the implementation of green accounting. This show that the implementation of green accounting os more influenced by other factors besides carbon tax policy. These findings reinforce the importance of exploring additional factors that can support the effective implementation of green accounting.

This research aims to examine the management of environmental risks arising from the use of fossil energy and strategies for transitioning to green energy in the business sector. The main focus of the research is to analyze the managerial role in facing environmental regulatory challenges, as well as how leaders and managers can develop a culture of sustainability within the organization. This research uses a qualitative approach with in-depth interview techniques and document analysis on large companies in the industrial and manufacturing sectors that have adopted or are transitioning to green energy, in the period June-September 2024. The results show that companies that successfully reduce environmental risks have a clear and strong energy transition strategy, including investments in green technology and managerial training related to sustainability. The biggest challenges faced are government policy uncertainty and the high costs involved in green energy implementation. In addition, this study also highlights the important role of visionary leaders and competent managers in driving organizational culture change towards sustainability. The implication of this research is the importance of a proactive, innovative management approach and compliance with environmental regulations in the face of green energy transition.

People's mining activities in Gamey Village, Uwapa District, Nabire Regency, Central Papua Province are carried out to meet daily needs and improve the welfare of the local community. This mining activity is based on alluvial deposit conditions and is applied for mining sediments on the surface and using alcon machines. for high pressure water spray. This community mining activity is divided into several stages starting from preparation of mining land, processing and production processes as well as selling gold products for sale. This research aims to examine the gold processing used by small-scale miners in Uwapa District, Gamey Village, and its impact on the environment and public health. The main focus of this research is on the use of the sluice box method, which is the gold processing technique most commonly used by local communities. This method was chosen for its simplicity and low cost, although the gold recovery efficiency varies between 50-70%. Additionally, this research evaluates alternative technologies such as shake tables and centrifuges that can increase gold recovery efficiency and be more environmentally friendly. The research results show that the implementation of alternative technology requires training, procurement of adequate equipment and infrastructure as well as ongoing monitoring. By adopting better technology, it is hoped that gold mining activities in Gamey Village can run more productively and sustainably, improving community welfare without damaging the environment.

System dynamic models have been recognized as an effective approach in projecting and designing sustainable urban waste management systems. This study aims to explore the potential of system dynamic modeling in urban waste management. This study uses a literature study method with a qualitative descriptive approach that refers to various relevant previous studies. The results of the literature study show that the system dynamic model is able to map the complex relationships between variables in the waste management system, such as population growth, waste production, waste processing capacity, environmental impacts, and others. In addition, the system dynamic model can project future waste management conditions and prepare the most effective policy scenarios. Through simulations of various policy scenarios, the system dynamic model can provide insight into the impact of each scenario, both in terms of technical efficiency, operational costs, and reduction of waste generation in landfills. In implementing policy scenarios, collaboration between the government, community, and stakeholders is also needed in optimizing waste management programs.

Textile industries in Bangladesh are shifting towards a sustainable future, and as a result, many firms are implementing Green Supply chain Management (GSCM). This study aims to evaluate if practicing GSCM in different areas of industry positively impacts environmental, economic, and social performance. Regarding this issue, this paper observes the scopes, drivers, and barriers of practicing GSCM and reviews it. Therefore, the research investigates, through empirical analysis based on responses from 104 textile firms, the influence of GSCM practices on environmental, economic, and social performance. Results confirm that GSCM improves environmental sustainability by reducing emissions, waste, and resource use. It enhances economic performance through cost savings and efficiency gains and also offers several social advantages, improved worker satisfaction, and community engagement. The results bring to light the potential role that GSCM can play in making the textile industry sustainable, along with suggesting policy interventions and further research on longitudinal impacts and advanced technological integration.

  Government-regulated Corporate Social Responsibility (CSR) programs are intended to reduce the impact on society and the environment, but CSR cannot be done without the support of good corporate governance (GCG). The purpose of this study is to ascertain and examine previous research on the impact of corporate governance and environmental and social responsibility, or CSR, on corporate value, financial performance, and profits. This research combines qualitative methods with a literature study strategy, which involves using data collected from publications published in national journals to support ideas. Twenty samples of indexed and non-indexed articles were selected by the researchers from Google Scholar. Based on the findings of previous research studies, this study found that the impact of corporate governance (GCG) and corporate social responsibility (CSR) on financial performance and firm value varies. By increasing stakeholder trust, CSR often improves profitability, however, these benefits are not always visible due to high implementation costs. The contribution of corporate governance, including audit committees and independent boards, to business efficiency and transparency varies. Researchers believe that a more thorough study of the impact of GCG and CSR on firm value, financial performance, and profits will be conducted in the future.    

This study aims to analyze the relationship between environmental costs, green accounting, and corporate social responsibility (CSR) on corporate profitability, with company size as a moderating factor. The findings reveal that environmental costs can have both positive and negative impacts on profitability, depending on how these costs are managed. Green accounting has been shown to enhance operational efficiency and transparency, positively affecting profitability. Additionally, CSR offers long-term benefits for corporate image and customer loyalty, though its effects may not always be immediately apparent. Company size moderates these relationships, with larger companies having greater advantages in managing environmental and social aspects compared to smaller companies. This study highlights the importance of strategic management of environmental costs, implementation of green accounting, and execution of CSR to support corporate sustainability and profitability.

Effective agricultural waste management has a huge potential to increase community productivity and income. Agricultural waste, often considered a problem, can be processed into valuable resources such as organic fertilizer, biogas, and animal feed. By utilizing organic fertilizer from agricultural waste, soil fertility can be enhanced and dependence on chemical fertilizers can be reduced, thus contributing to increased crop yields. Biogas produced from the fermentation process of waste can be used as an alternative energy source, which in turn can reduce operational costs and increase income. Moreover, animal feed derived from agricultural waste can improve the quality and quantity of livestock production, which also contributes to changes in the income of livestock farmers. Additionally, good agricultural waste management can reduce environmental pollution and improve public health. Therefore, it is important to raise awareness and knowledge among the community about sustainable agricultural waste management practices. This needs to be complemented by adequate infrastructure and training so that waste can be processed into resources that benefit everyone.    

Operational management is an important part of problem solving factors in manufacturing companies because they have to face changing environmental conditions. Marketing Strategy is a strategy designed to promote goods or services with the aim of generating profits. Especially in some contexts, consumers tend to focus more on brands than products when making purchases, choosing certain brands because they have a positive image. Qualitative research methods place more emphasis on observing phenomena that occur and more on examining the substance of the meaning of these phenomena. Descriptive qualitative research means that the researcher must describe an object, phenomenon, or social setting which will be outlined in narrative writing. Benefits and Objectives of Company Operational Management 1. Efficiency (increasing efficiency) 2. Productivity (increasing efficiency) 3. Economy (reducing costs) 4. Quality (improving quality) 5. Reduced processing time (reducing production process time) Suggestions for this research are that several objects can be added to determine product quality improvements.

To find out  the beef cattle business in Perbaungan sub-district is potentially profitable from a financial, social and environmental perspective. Primary data were collected through interviews with farmers and secondary data from relevant agencies. Descriptive-analytical method was used. Benefit-Cost Ratio (BCR), Net Present Value (NPV), and Internal Rate of Return (IRR) were used to assess business feasibility. The results showed that the beef cattle business is financially viable with a BCR value of 1.35, NPV of 25,000,000, and IRR of 18 per cent. In addition, the business has a positive impact on income generation, job creation, and farmer welfare. But there are some problems, such as changes in feed prices and cattle waste management. Even if feed prices and cattle selling prices change significantly, the business is still viable, according to the sensitivity analysis. To make the business more sustainable, the government should help through training programmes, feed subsidies and access to finance. Beef cattle enterprises have great potential to grow and have a positive impact on both the environment and the community if managed properly.

The development of digital technology has brought significant changes in the invitation industry, replacing conventional paper invitations with digital invitations that are more environmentally friendly and efficient. This study aims to analyze the business model of the Untukmu digital invitation business using the Business Model Canvas (BMC) framework. BMC includes nine key elements, namely customer segments, value propositions, channels, customer relationships, revenue streams, key resources, key activities, key partners, and cost structures. The results of the analysis show that the personalization approach, interactive features such as RSVP and photo galleries, and digital promotion strategies through social media are the main competitive advantages of this business. This study also identifies the challenges faced, such as market competition and limitations of UI design, and provides strategic recommendations to overcome these obstacles. With this analysis, it is hoped that the Untukmu digital invitation business can increase its competitiveness and business sustainability.

Sunlight as a renewable energy source that produces heat energy from solar radiation. Radiation is the propagation of energy without an intermediary substance, so that solar energy can reach the earth's surface through radiation due to the vacuum between the Earth and the Sun. Radiation is the only energy that can propagate through a vacuum and reach the earth's surface through direct radiation, diffuse radiation, and total radiation. Solar panels are devices that can convert sunlight into electricity. The study aims to understand the effectiveness of solar panels in generating electricity, identify factors that affect the performance of solar panels in residential environments, and assess the utilization of Energy from Solar Panels that Can Reduce Monthly Electricity Costs at Home. The research methodology used is qualitative. The results of this study, the utilization of solar panels in residential environments shows varying effectiveness, Environmental factors such as temperature, lighting, cleanliness, and extreme weather conditions play an important role in the performance of solar panels in households, Utilization of solar panel energy in households can reduce monthly electricity costs.    

Fish waste and tempeh have significant nutritional advantages in making cat food. Some of the advantages that can be obtained from using these ingredients include the vegetable protein content in tempeh which is easier for cats to digest, making it very beneficial for cats with certain digestive sensitivities or allergies. Tempeh also contains essential amino acids that help meet the nutritional needs of cats, as well as support muscle growth and maintenance. Fish waste contains important nutrients such as 29.70% protein, 18.83% fat, 1.94% carbohydrates, 8.97% water content, and 1.07% crude fiber, which overall meet the nutritional needs of cats. In addition, the omega-3 fatty acid content in eggs is also useful for the health of the cat's skin and fur, making the food more nutritious. Tempeh is also known as first aid for cats with diarrhea, because the bacteria contained in tempeh can help neutralize harmful bacteria in the cat's intestines. By combining fish waste and tempeh in cat food, cats can get complete and balanced nutritional intake, while reducing feed production costs, making it a more environmentally friendly and economical choice.

The results of the study show the application of environmental accounting (Green accounting) according to the Islamic perspective of waste management of PT. Sources of Graha Sejahtera (SGS) include Avoiding Air Pollution, Good Waste Management and Green Spaces.  PT incurs costs for environmental activities such as waste management, environmental monitoring costs, employee training costs, and environmental activity audit costs. All environmental costs, and allocating these costs based on cost types in a structured environmental accounting contribute well to environmental performance. The impact of the application of environmental accounting in waste management at PT. Sumber Graha Sejahtera (SGS) produces goodness and cleanliness because when a company carries out activities support environmental management, the management must wisely record every cost incurred related to environmental activity. These costs are referred to as environmental costs that must be charged to functions within the company appropriately, for example, production functions, marketing functions and other functions.

In recent years, demand for these products has increased along with awareness of the beauty and durability of bengkirai wood. Although SMEs contribute significantly to the Indonesian economy, they face challenges, including access to financing and production efficiency. This study aims to understand how Rumah Parquet accounts for costs related to maintaining environmental quality in its production process. The methodology used included interviews and regression data analysis to calculate Cost of Goods Manufactured (COGS), Operating Expenses (BOP), and profit and loss statements. The results show that Rumah Parquet has not fully integrated environmental quality costs in the COGS calculation, which has an impact on profitability and business sustainability. The findings provide insights for industry players on the importance of better cost management to improve product competitiveness. This research also contributes to the literature by highlighting environmental aspects in cost calculation in the SME sector.  

The construction industry is one of the sectors that has a significant impact on environmental damage due to high energy consumption, exploitation of natural resources, and carbon emissions. In response to these challenges, this study aims to analyze the potential for implementing sustainable construction materials to support the development of green infrastructure. Using qualitative methods through literature studies, documentation, observation, and in-depth interviews, this study evaluates the advantages, challenges, and economic and environmental impacts of various innovative materials, such as foam glass, green wall systems, bamboo composites, eco-cement, and mycelium-based blocks. The results show that these materials are able to reduce carbon emissions, increase building energy efficiency, and offer long-term cost savings. Mycelium-based blocks, in particular, are recorded as the most effective material in reducing construction costs by up to 25% and CO₂ emissions by 250 kg per project. However, the implementation of sustainable materials in Indonesia still faces obstacles such as cost, material availability, and technical regulations. Therefore, synergy is needed between the government, academics, and industry in encouraging research, preparing technical standards, and public awareness campaigns to expand the adoption of environmentally friendly materials in the national construction sector.