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Indonesia is an archipelagic country that has abundant mineral wealth, both metal minerals and other minerals. Metal minerals, including gold, tend to have a higher economic value. Based on data from the Ministry of Energy and Mineral Resources, the world's gold reserves in 2020 were 50,300 tons of Au. Indonesia is among the 5 largest in the world with 5% of the total gold reserves, which is 2,600 tons of Au. Therefore, it is necessary to develop technology and science in the mining industry, especially gold and silver, to improve the optimization of the process and increase the added value of the mining products themselves. One of the gold extraction processes can be done hydrometallurgically with the cyanidation method using a intensive leach test. The results of this experiment show that factors such as cyanide usage and ultra fine particle size will greatly affect the recovery of gold and silver metals.

This study aims to examine the influence of Brand Awareness on the Purchase Intention of consumers of SilverQueen chocolate products in the Tangerang area. The method used in this study is a quantitative approach with survey techniques, involving 100 respondents from various demographic backgrounds. Data collection was conducted through questionnaires using a Likert scale and analyzed with SPSS software. The results of the validity test show that all indicators used to measure Brand Awareness and Purchase Intention are valid, with the calculated r value exceeding the table r value and significance below 0.05. The reliability test shows a Cronbach's Alpha value of 0.936, indicating that the questionnaire has very good consistency. The normality, multicollinearity, and heteroscedasticity tests indicate that the regression model meets the classical assumptions. The results of the coefficient of determination (R²) analysis indicate that Brand Awareness contributes 11.9% to Purchase Intention. The t-test shows that Brand Awareness has a significant positive effect on Purchase Intention, with a calculated t value of 3.630, greater than the t-table value, and a significance value of 0.000, which is less than 0.05. These findings confirm that the higher the level of Brand Awareness, the greater the likelihood that consumers will purchase SilverQueen products. This research provides valuable insights for the company in designing effective marketing strategies, emphasizing the importance of increasing Brand Awareness to boost consumer purchase interest.    

Celuk Village in Gianyar is known as the centre of silver craft with high artistic value, yet local artisans face significant challenges in maintaining sales amidst changing consumption patterns and global competition. This research aims to identify the key constraints faced by Celuk Village's silversmiths, such as limited access to digital marketing technology, lack of product innovation, and lack of understanding of modern business strategies. In addition, local constraints such as reliance on traditional marketing methods and limited training narrow the opportunities for artisans to compete in the global market.The results of the study suggest that the utilisation of digital technology, product design innovation, and improved business management skills can be strategic solutions to expand market reach and improve the competitiveness of Celuk Village's silver crafts. Support in the form of training and facilitating access to e-commerce platforms is also needed to introduce their products to modern consumers without abandoning cultural identity. The findings are expected to contribute to a sustainable silversmith empowerment programme, while supporting the preservation of local cultural heritage in the digital era.

A study on the description of silver (Ag) levels in liquid waste fixer originating from a radiology installation before being processed at the Waste Treatment Installation is sometimes necessary to avoid environmental pollution. The time and place of this research were conducted at the radiology installation for approximately 1 (one) month. The purpose of this writing is to determine the description of the silver (Ag) levels of fixer in the radiology installation. This research method is field observation. and the processing of silver levels was carried out at the Medan standardization research agency (baristand) with researchers sending samples of 100 mg/l to be tested for silver levels. The thing studied in this study was to determine the description of silver levels using the Atomic Absorption Spectrophotometry (AAS) method. From the observation results after processing, the Ag content was 0.03 mg/L. After processing, the silver content was allowed to be discharged directly into the environment or public channels because the results were still below the established quality standards, namely 5.0 mg/L. However, it would be better if each hospital was advised to process the liquid waste at the Wastewater Treatment Plant to avoid environmental pollution.

This research aims to determine and analyze the influence of compensation, work discipline and work motivation on employee performance at PT. Eka Silver Gold And Jewelry. This type of research is research with a quantitative approach. The population in this study were all employees of PT. Eka Silver Gold And Jewelry. Determination of the sample in the study used non-probability sampling through saturated samples so that the total sample in this study was 50 employees. The data analysis method in this research uses SPSS analysis tools through validity, reliability, classical assumption tests, namely normality test, multicollinearity test, heteroscedasticity test, multiple linear regression, t test, F test and correlation and determination coefficients. The results of this research show that (1) Compensation Variable with a sig value. 0.000 < 0.05, then the compensation variable influences employee performance (2) Work Discipline variable with a sig value. 0.000 < 0.05, then the work discipline variable influences employee performance (3) The work motivation variable with a sig. 0.000 < 0.05, then the motivation variable influences employee performance (4). From the results of these calculations, an Fcount of 25.680 is obtained, which means an Fcount of 25.680 and a sig value. 0.000 < 0.05 so Ho is rejected and H4 is accepted. So the independent variables Compensation, Work Discipline and Work Motivation together have an influence on employee performance at PT. Eka Silver Gold and Jewelry.

Motorbikes produce exhaust gases that are dangerous for humans over the long term. Motorcycle exhaust gas is produced from incomplete combustion in the combustion chamber. The aim of this research is to anticipate the effects of exhaust gas produced by varying the thermal conductivity of the spark plug electrode and adding a percentage of octane booster to the fuel. This research uses quantitative concepts with experimental methods. Process the data using Microsoft Excel. This research was carried out at idle engine speed. The results show that emissions of CO have decreased significantly. The lowest CO emissions were obtained from a silver spark plug alloy and a 6% octane booster mixture, with a value of 2.09%. HC shows that the exhaust gas emission value has decreased very significantly. The results of HC exhaust gas emissions decreased by 671.66 ppm from the highest, 1121.33 ppm with a standard spark plug alloy and 0% octane booster mixture, to 449.67 ppm with a silver spark plug alloy and 7% octane booster mixture. Meanwhile, CO₂ exhaust emissions have increased. The highest value of CO₂ exhaust emissions are 3.77% with a mixture of silver spark plugs and a mixture of 7% octane booster.

The purpose of this study is to find out: (1) Development of children's creativity at PAUD Pelita Harapan Pasar Latong, (2) the influence of finger painting games on the development of children's creativity at PAUD Pelita Harapan Pasar Latong. This research uses a quantitative approach with an experimental research type. The research design used a one-group pretest-posttest type pre-experiment . The instruments used consisted of observation and documentation. The data analysis technique used descriptive statistics and conducted a requirement test, namely normality test and homogeneity test. Hypothesis testing using the "t" test. The results showed that: (1) The development of children's creativity at PAUD Pelita Harapan Pasar Latong has developed well, this can be seen from the results of observations of the development of children's creativity during the pretest and during the posttest. The pretest results obtained an average of 13,4 on the posttest obtained an average of 26,9. (2) The results of the "t" test calculation obtainedtcount = 13,76 when compared with the ttable at the 95% confidence level or 5% error rate with free degrees (db) = N - k = 20 - 2 = 18 obtained ttable 2,10. If the price of tcount= 13,76 is compared with ttable = 2,10, it is known that tcount is greater than ttable, (13,76> 2,10). This means that the proposed hypothesis is accepted. That is, there is an influence between finger painting games on the development of children's creativity at PAUD Pelita Harapan Pasar Latong.

This study aims to determine the effectiveness of inactivation treatment of silver barb eggs by UV irradiation for 30 seconds (the dose of 991,67 J/m2) or 50 seconds (the dose of 1652,79 J/m2) for damaging the genetic material of silver barb eggs as assessed by abnormal morphology or appearance of the larvae (or haploid), to determine the effectiveness of diploidization by heat shock at 40°C for 90 seconds to silver barb zygote at 10 or 15 minutes from fertilization time, in order to obtain diploid androgenetic of silver barb as assessed by normal morphological larvae (or diploid) similar to the positive control.Results showed that the average fertility among treatments were highly significant difference.

In Indonesia, ethnic and cultural diversity provides its own color in the dynamics of political participation, including the Batak tribe which has unique cultural and social characteristics. Jl. Taud Siderojo in Deli Serdang Regency is one of the areas inhabited by the Batak community. The Batak people are famous for their spirit of togetherness (dalihan na tolu), courage and openness in expressing opinions. These cultural values ​​are very influential in various aspects of life, including politics. Batak youth in this region are not only the successors of tradition and culture, but also important actors in local and national political processes.

The aim’s of this research was to determine the effect of mulch type on the growth and yield of eggplant plants. This research was carried out from February to May 2018. In Fatuquero village, Railaco sub-District, Ermera Municipality, it is located at an altitude of 800 m above sea level. The design used in this research was a single factor Randomized Block Design, namely Mulch (M) which was repeated 4 times, namely M0 = No Mulch (control), M1 = Rice Straw Mulch, M2 = Black Plastic Mulch and M3 = White Plastic Mulch silver.  In general, the effect of mulch type provides very significant differences in all growth parameters and yield parameters. The research results showed that the silver white plastic mulch (M3) gave the highest yield, namely 8.03 kg/plot and the lowest yield was obtained in the treatment without mulch (M0) with a value of 4.83 kg/plot.

The process of socializing self-reliance services for street children at PSBR Taruna Jaya 2 has several guidance activities such as social guidance which provides physical and mental guidance and skills guidance. This research was conducted at the Taruna Jaya 2 DKI Jakarta Youth Development Social Institution (PSBR Taruna Jaya 2) among street children who received skills guidance. The method used is qualitative with data collection techniques of observation, interviews and documentation. The informants interviewed were social workers, institutional managers, instructors and street children. The results of the research show that the condition of street children before receiving guidance at PSBR Taruna Jaya 2 did not have special skills to make a living, they were young men aged 18 to 30 years. They were caught in control operations by the authorities, living on the streets acting as street children (anjal), homeless people and beggars (gepeng), silver people, street singers, clown singers and punks. Education is low and some cannot read, write and count. Participated in coaching at PSBR Taruna Jaya 2 for 6 months. Implementation of skills guidance programs in the form of welding, car or motorbike repair, electronics, air conditioning and screen printing. The implementation of the program is funded by the Regional Government of DKI Jakarta and involves social workers, institutional managers, psychologists and instructors. Monitoring and evaluating training guidance with internships at collaborating companies. The independence of street children means that by terminating street children, they become aware of the law, return to their families and live in the community, some have even gotten jobs and opened their own businesses so they can cover their own needs without depending on other people.

Nanotechnology is currently growing rapidly due to its broad application in science and technology. Nanotechnology itself is a science based on nanoparticles, so a more environmentally friendly method is being developed, namely the "green synthesis" method using plant extracts as a bioreductor. Silver nanoparticles have been synthesized using extracts of bidara leaf as a reducing agent. The objective of this research was was to determine the synthesis of silver nanoparticles using bioreductors and their application as antibacterial agents using bidara leaf extract against Staphylococcus aureus bacteria. This research used the green synthesis method to produce silver nanoparticles. The bidara leaf extract used was divided into several concentrations, namely 1 mM, 2 mM, 3 mM and 4 mM. To characterize silver nanoparticles, UV-Vis and PSA spectrophotometers were used. Furthermore, the Kirby-Bauer method was used to test the antibacterial properties of silver nanoparticles against Staphylococcus aureus bacteria. The results of research that has been done show that the formation of silver nanoparticles is characterized by the emergence of maximum absorbance peaks in the wavelength range of 400-450 nm, while the PSA results at concentrations of 3 and 4µm showed nanoparticle sizes of 185 nm. Silver nanoparticles of bidara leaf extract with various concentrations of 1 mM, 2 mM, 3 mM and 4 mM have antibacterial activity that can inhibit the growth of Staphylococcus aureus bacteria with an average inhibition zone diameter of 13.0617 mm, 11.7333 mm, 9.05 mm and 13.19 mm. This shows that silver nanoparticles with bidara leaf extract have antibacterial properties.