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In the rapidly evolving digital era, the demand for precious metals, especially gold, has significantly increased. Companies need to adopt modern technology to facilitate the ordering of precious metals effectively and efficiently. This study aims to design the user interface (UI) and user experience (UX) of a precious metal ordering application using the Design Thinking method, which involves the stages of empathy, definition, ideation, prototyping, and testing. Starting with problem identification and interviews to understand user needs, this study produces user personas and user flows that assist in creating wireframes and mockups of the application. The prototype is tested through usability testing using the System Usability Scale (SUS) and Maze to measure user effectiveness, efficiency, and satisfaction. The results show that the designed application enhances user experience with an intuitive and easy-to-use interface, achieving a usability testing score of 85 on the SUS and a task success rate of 90% on Maze, indicating that the Design Thinking method is effective in designing the UI/UX of a precious metal ordering application.  

The global community is increasingly focusing on conservation. To combat pollution andresource wastage, modern technologies, like automation and AI are widely employed in environmentalprotection tools. This study delves into the utilization and advancement of automation and AI inenvironmental protection tools examining their real world applications across sectors like wastewatertreatment, air pollution control, solid waste management, metallurgy and energy supervision. Furthermoreit investigates the fusion of automation and artificial intelligence in the development of environmentalprotection tools. The study also addresses aspects such as data collection, performance monitoring,sustainable growth, prevailing challenges and future trends. Through an analysis it underscores thepotential of automation and artificial intelligence in enhancing environmental protection tools effectivenesstowards achieving sustainable conservation goals. Lastly recommendations for research are proposed todrive innovation and enhancement of environmental protection technology. This study aims to offerinsights and guidance for both research endeavors and practical applications, within the realm ofenvironmental protection technology.

The development of the automotive world to date has grown rapidly, especially two-wheeled vehicles. Large temperature changes in lubricating oil viscosity, even if the value is too low, will reduce the lubrication of engine parts, increase friction between metals, and cause engine parts to heat up quickly. Efforts to control and overcome excessive engine heat can replace mineral-based lubricating oils with environmentally friendly and biodegradable lubricating oils. The purpose of this study is to determine the effect of using a mixture of cooking oil and surfactants C64H124O26 and C42H80NO8P as engine lubricants on the power and temperature produced by motorized vehicles. The independent variables of this research are RPM variation and mixture of pure cooking oil with lecithin and polysorbate surfactant (2.5%, 5%, 7.5%). The dependent variables are engine temperature and power. The control variables of this research are testing at room temperature, 4 stroke 125CC matic vehicle, and Raw Material using Palm cooking oil. The test method uses an infrared thermo gun for temperature and Dyno test for the highest power test on the type of Cooking Oil + Polyosrbate 7.5% with an average overall power of 5.872, then for the lowest temperature on the type of Cooking Oil + Polysorbate 2.5% with an average value of 86.2ºC.

Lubricating oil is a type of fluid needed by a machine to carry out work steps. Significant changes in the temperature of the lubricating oil viscosity until it is too low makes the engine components less lubricated, which causes the engine components to heat up quickly because the friction between the metals that occurs becomes greater. Lubricant that is of poor quality can cause deposits to appear in the engine room which results in the engine working harder. The aim can be achieved in this research by varying the lubricating oil with a mixture of Estolide and Diglyceride surfactant percentages of (2.5%, 5% and 7.5%). This test was carried out on a petrol motorbike with a combustion chamber volume of 125cc with standard conditions. The data that will be taken in this research includes engine temperature and power. The power testing method using a dynamometer and lubricant with cooking oil mixed with 7.5% estolide surfactant after heating produces an average value of 6.52 HP which has a higher average value than oil with a value of 5.37 HP

The research aims to determine the influence of the marketing mix (4P) and consumer behavior on the intention to choose the Metallurgical Engineering study program. Analysis using Structural Equating Modeling (SEM) on Partial Least Square (PLS) and data collection by distributing questionnaires to 150 respondents who know Metallurgical Engineering, Institute Del Technology. Purposive sampling is the sampling method used in research. The research results show that the intention to choose a Metallurgical Engineering study program is strongly influenced by the marketing mix (4P) and consumer behavior.  

Adsorption is a separation process on a particular substance based on the affinity of a compound to a solid. The adsorption process requires an adsorbent as an absorbent material and an adsorbate as an absorbed component. The adsorbent that is often used to absorb Cu2+ ions is silica gel. Silica gel is a rigid gel that is amorphous. In silica gel there are two main bonding groups, namely siloxane and silanol groups which cause silica gel to easily absorb polar molecules, especially water. The purpose of this research is to get the best mass of silica and the effect of the initial concentration of Cu ions on the final concentration of Cu metal. In this study, two operating conditions were varied, namely the mass of silica gel adsorbent 0.4 grams; 0.6 grams; 0.8 grams; 1 gram; 1.2 grams and the initial concentration of Cu metal 3 ppm; 4 ppm; 5 ppm; 6 ppm; 7 ppm. The results of this study showed that the silica content of bagasse ash was 70.97% with a surface area of 283.802 m2/g. The best result of this study reduced the content of copper metal (Cu) by 88% in the condition of silica gel mass of 1.2 grams. The adsorption isotherm shows that the data is more in line with the Freundlich equation. The resulting equation is y = 0.4268x + 0.4969 with an R2 value of 0.9837.

This article discusses the use of Faraday’s law and Lorenz's force in the use of magnetic brake technology on motorbikes in an effort to increase the efficiency and sustainability of transportation. The magnetic brake is made of non-ferromagnetic metal, the disk is flanked by a coil that carries an electric current which is then regulated by a driver and uses an Arduino to be able to regulate and measure the current strength in the magnetic brake. The research results show that magnetic brakes are able to provide significant speed reduction by producing consistent and responsive braking force. With the wider use of magnetic brakes, these findings show the great potential of magnetic brake technology in improving the operational efficiency of motorbikes. Research supports further development and application of this technology in the automotive industry.  

This research explores the electrolysis process of a mixture of copper(II) sulfate (CuSO4) and aluminum sulfate (Al2(SO4)3) solutions using carbon electrodes. The main objective is to understand the mechanism of gas formation and metal deposition efficiency. In the experiment, CuSO4 and Al2(SO4) solutions )3 with a concentration of 0.5 M each is used as the electrolyte, and carbon electrodes as the cathode and anode. During electrolysis, the electric current causes copper ions (Cu²⁺) to move to the cathode, undergo reduction to copper (Cu), and deposit on them. cathode. Aluminum ions (Al³⁺) tend to remain in solution due to the higher reduction potential. At the anode, hydroxide ions (OH⁻) from water are oxidized, producing oxygen gas (O₂). and oxygen gas at the anode. The efficiency of copper deposition was analyzed by measuring the mass of deposited copper. This research provides insight into the dynamics of electrolysis of CuSO4 and Al2(SO4)3 mixtures, as well as their potential in electrochemical applications. In conclusion, the use of carbon electrodes is effective for the deposition of pure copper and the production of oxygen gas as a by-product.

This study aims to examine the relationship between the Internal Control System (SPI) and potential corruption with accountability as a mediating variable. The sample used in this study was local governments in Indonesia at the district/city level in 2020-2022 so that the sample amounted to 1,307 samples. The sample selection used purposive sampling technique and the analysis technique used was regression analysis and path analysis with SPSS 27 software. Furthermore, the sobel test was used to test the indirect effect of the independent variable on the dependent variable through the intervening variable. The results of the study provide empirical evidence that the SPIP variable has a negative effect on potential corruption. Then SPIP is also proven to have a positive and significant effect on accountability. And accountability has a negative and significant effect on potential corruption. And accountability acts as a mediating influence between SPIP on potential corruption.

One of the company's goals is to maximize the value of its shares to achieve company value. When investing in the capital market, investors also take into account the value of the company. Over the last five years, the value of companies in the food and beverage subsector experienced a significant decline from 2020 to 2023. This decline began in 2019. Many factors, including company size, profitability and leverage, influence the value of a company. The gap phenomenon supports the existence The research gap indicates the need for additional research into the variables that influence firm value. The aim of this research is to present empirical data regarding the influence of company size, profitability and leverage on manufacturing companies in the metal industry and similar industries listed on the Indonesia Stock Exchange between 2019 and 2023. All companies in the food sector and beverage subsector are listed on the Exchange. Indonesian Securities (BEI) is the research population. A purposive sampling strategy was used to select the research sample from seven observations. Multiple linear regression analysis is used in research to analyze secondary data. SPSS is a program used in research. The findings of this research show how leverage and company size affect company value. However, empirical data also shows that profitability has little effect on company value. Simultaneously, the factors Company Size, Profitability, and Leverage influence Company Value.

This study analyzes Toraja death customs using Roman Jakobson's theory of language functions. The study highlights how language functions (emotive, conative, referential, metalinguistic, phatic, and poetic) are applied in death rituals, which reflect the cultural and social values of the Toraja people. The research findings show that these death customs serve as complex communication tools, strengthen community identity, and connect the present with the past through symbolism and traditional practices.

The first stimulation of creativity in early childhood is so that children can express themselves creatively. Second, they can think creatively as an ability to resolve conflicts or solve problems. Third, independent creative practices give someone pleasure to produce useful goods. Fourth, creativity to improve the standard of living and norms of life. KB ONSIF which is still located in the village office of hamlet I, Onozitoli Sifafo village is a supporting factor for the large number of loose parts materials available, educators change the environmental conditions that are full of drinking bottles, paper and cardboard scattered around the building into educational play media for children. This conversion power can not only be used as a learning medium, but can also create cleanliness in the environment around the school. Loose parts are objects that are easily found in our environment, such as twigs, shells, used plastic packaging, plastic bottles, cardboard, metal, cloth, etc. These materials can be obtained by teachers and parents anywhere without spending money. The purpose of this study was to see the use of loose parts media in stimulating children. The research method used was descriptive qualitative by obtaining data from the results of observations, interviews and documentation. The research results obtained through loose parts media learning activities are able to stimulate children's creativity, as evidenced by the results of children's work based on children's imagination without the help of teachers.

This study aims to determine the system used by the Regional Income Agency in the collection of non-metallic mineral and rock tax in increasing the original income of the region, as well as to know the constraints in the implementation of the collection of Mineral Taxes instead of Metal and Bengkalis Regency Rocks. The type of research used in this study is qualitative with data collection techniques in the form of documentation, interviews, and literature study. The results of this study indicate that Bengkalis District Income Agency apply selfassessment system in the collection of Non-Metallic Mineral and Stone Taxes where taxpayers calculate, report and deposit / pay their own taxes to the Regional Regulatory Agency Bengkalis District. With the implementation of self assessment system in the collection of Non-Metallic Mineral and Stone Tax the taxpayers are encouraged to pay the taxes, so that each year the target of the Original Revenuerealized. From the data analysis of the target report on the realization of non-metallic mineral revenues and Bengkalis Regency's Rocks in 2014-2016 explained that the target of non-metallic mineral and mineral tax receipts every year reaches the set targets. However, revenue growth has decreased. Overall implementation of self assessment system in the collection of non-metallic mineral taxes and rocks at Bdan Revenue District Bengkalis is good, this is evidenced in the data target of realization of Non-Metallic Mineral and Stone Minerals reach the target set.

This research aims to determine the effect of EPS, ROE and DER on share prices partially and simultaneously. This type of research is carried out quantitatively with panel data and processed with statistical analysis assisted by E-Views and the appropriate model is Common Effect. The research population is companies in the metal and similar sub-sector. Sampling was carried out using purposive sampling and it was found that 5 research companies were carried out from the 2017-2022 period. The research results showed that EPS and ROE partially influenced share prices, but DER did not show a partial influence on share prices. Meanwhile, EPS, ROE and DER simultaneously influence share prices.

This article discusses the importance of Pancasila education in shaping tolerance and social awareness among Indonesian university students. Based on the nation's five core principles, Pancasila education plays a crucial role in developing the character of the younger generation. By instilling strong moral and ethical values, this education aims to equip students with the ability to face social challenges wisely and responsibly. This study employs a qualitative method with a descriptive-analytical approach through library research. The findings indicate that Pancasila education can create a conducive learning environment for students' self-development, encompassing not only intellectual aspects but also the formation of moral character. The implementation of this education includes interactive teaching methods, practical experiences, and character education development. Effective methods include group discussions, case studies, community service programs, and student organization activities. In conclusion, Pancasila education must be an integral part of the higher education curriculum to ensure that students thoroughly understand and apply Pancasila values in their daily lives. This is expected to produce a young generation with strong character, tolerance, and social awareness, contributing to the formation of a harmonious and just society.

Pancasila education in Indonesia aims to shape the character of a diverse society into a cohesive unity with a focus on the value of tolerance in a multicultural community. This article examines the role of Pancasila education in promoting a tolerant attitude amidst a culturally diverse society, with values such as social justice, unity, equality, and cooperation as the foundation of harmony amidst differences. Studies also indicate the potential to strengthen tolerance values through intercultural interactions, such as in the activity of hunting for takjil, which symbolizes togetherness among various community groups. By strengthening the understanding of Pancasila values, society can be more open and appreciative of differences, creating harmonious intercultural relationships.

Objective: This study aims to reveal the strategies used by Metal and Machinery MSMEs in West Nusa Tenggara in competing and expanding their products to foreign markets or international markets. Design/methodology/study approach: The method used in this study is research with a case study method with interviews at MSMEs Andi Welder who process metals and produce coffee processing equipment. Conclusion: MSMEs Andi Welder uses Canva's analysis strategy in innovating its products which aims to see the market response of what products are most sought after by consumers then the products are refined so that they can be accepted by the international market. Limitations/implications of research – This research can not only limit the product innovation strategies that are acceptable to consumers, then for future research can expand on other strategies such as brand strategy and product quality. Originality/value: This research is a case study research that raises the strategy of metal and machinery MSMEs to enter the international market

The discharge of ballast water by commercial vessels impacted on the development of non-native species and the spread of heavy metal. In this research, descriptive methodology was applied whose research sample was obtained by random sampling method. Questionnaire and interviews were employed as the data collection method. In order to identify the strategy, the data were then analyzed by using SWOT (Strength, Weakness, Opportunity, and Threat). The research was aimed to formulate the model and strategy in the implementation of BWM (Ballast Water Management). BWM had been analyzed and applied to determine an appropriate model for ballast water treatment. In this case, the Harbour Master and Port Authority Office of Tanjung Emas can possibly apply a defensive strategy. This strategy emphasizes on the improvement of Port State Control (PSC) and penalties. In order to maintain the vessel stability, container vessels, passanger vessels, and ro-ro vessels are recommended to apply freshwater within their ballast tanks. Moreover, a ballast water treatment facility has also been provided by the port administrator, Pelindo III, for bulk carrier vessels and tankers to discharge their ballast water.   

This study focuses on optimizing electric vehicle (EV) battery recycling through the use of green chemical processes and circular economy principles. The research aims to enhance the recovery of valuable metals lithium, cobalt, and nickel from used lithium-ion batteries (LIBs) in an environmentally sustainable manner. Green solvents were employed as a safer alternative to conventional, toxic chemicals, minimizing hazardous waste emissions and improving the efficiency of the recycling process. Experimental results showed that the green solvent-based process achieved high recovery rates of 90% for cobalt, 87% for nickel, and 85% for lithium, with metal purity levels exceeding 95% for all three metals. The study also examined the scalability of the green solvent method, revealing its potential to offer more sustainable and cost-effective solutions compared to traditional methods, which typically involve high temperatures and toxic chemicals. Despite the promising results, challenges such as solvent recovery and the adaptation of the process for large-scale industrial applications remain. Nonetheless, the study demonstrates that integrating green solvent-based recycling into the global EV supply chain can significantly reduce environmental impacts, conserve resources, and support the transition to a circular economy. The findings highlight the potential of this recycling method to provide a more sustainable and efficient solution for EV battery recycling, ultimately contributing to the development of a more sustainable EV industry.

Healthcare waste (HCW) is a significant environmental and public health concern due to its hazardous nature, particularly the presence of emerging pollutants such as pharmaceuticals, heavy metals, and pathogens. The improper disposal and management of healthcare waste contribute to pollution and pose long-term risks to both human health and ecosystems. This study examines the toxicity risks associated with HCW in areas near healthcare facilities with inadequate waste management practices, showing an increase in toxicity risks by 22% to 30%. The research develops a cumulative risk assessment model that integrates human exposure with ecological risks, considering both direct and synergistic effects of pollutants. The model incorporates various components, including pollutant analysis, bioaccumulation mapping, and long-term exposure modeling, to assess the environmental and health risks of HCW. The findings highlight that inadequate waste management leads to significant pollutant accumulation in local ecosystems, with direct implications for biodiversity and human health. Additionally, the study emphasizes the benefits of applying the One-Health approach, which considers the interconnectedness of human, animal, and environmental health, offering a more integrated understanding of the risks posed by HCW pollutants. The research advocates for the incorporation of the One-Health model in healthcare waste management policies to mitigate risks and improve sustainability. Future studies should refine the cumulative risk assessment model and expand it to encompass other environmental waste sources, providing a more comprehensive understanding of pollutant impacts and advancing mitigation strategies.