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This community service activity aims to introduce the use of the PhET virtual laboratory and to identify students’ responses to the PhET-based virtual laboratory training in empowering students at SMA Negeri 1 Unaaha. The program also seeks to address the issue of limited science practicum facilities in the partner school. The study employed a descriptive quantitative design involving a single group of 23 participants from grades X to XII in the science stream. Participants took part in several sessions, including orientation, demonstration, and exploration of the Build an Atom and Circuit Construction Kit: DC simulations. Research data were collected using a Likert-scale questionnaire consisting of 30 items covering six main indicators: conceptual understanding, motivation, activeness, interest, ability to operate PhET, and learning satisfaction. All questionnaire results were converted into percentages for each indicator. The analysis showed an average response rate of 86.67%, with details as follows: interest 92%, activeness 90%, motivation 88%, satisfaction 89%, operational ability 83%, and conceptual understanding 78%. These findings indicate a very positive acceptance and significant reinforcement in the affective, participatory, and technical skill aspects of the students.

Kebonagung hamlet in Sukolelo village is an area where the majority of residents cultivate bananas. The abundant banana production generates a considerable amount of waste, one of which is banana stems that are usually piled up, burned, or left to rot without further use. Therefore, this community service project aims to provide a comprehensive overview of the potential use of banana waste as raw material for organic compost in Kebonagung Hamlet, Sukolelo Village. The methods used in this study involved banana farmers as research subjects and banana stems as research objects, with data collection techniques including field observations, interviews with farmers, and composting experiments. Simple laboratory analysis shows that compost from banana waste contains 1.8% nitrogen (N), 0.9% phosphorus (P), and 2.3% potassium (K), making it highly potential for use as compost material. In addition, composting activities can create new jobs through the development of organic fertilizer management business units at the village level. This is in line with Sustainable Development Goal (SDG) 12 on responsible consumption and production. According to Santoso (2020), the benefits of compost include: (a) improving soil structure, (b) increasing soil water storage capacity, (c) increasing soil microbial activity, and (d) reducing dependence on chemical fertilizers. Qualitative data were analyzed through data reduction, data presentation, and conclusion drawing in the form of nutrient content analyzed using simple laboratory tests to determine the levels of N, P, and K. The banana waste composting process went well. In the first week, the temperature of the compost pile increased to 45°C, indicating high microorganism activity. The temperature stabilized at around 50–55°C. After the second week, the temperature decreased and stabilized close to the ambient temperature, indicating that the compost was mature.

Jenang Jubung is a typical snack from Gresik City. Its shape is unique and different from jenang in general. Jenang jubung tends to have a chewy, soft, savory, and sweet taste. This study aims: 1) To determine the effect of mocaf flour substitution on the organoleptic properties (chewy, shape, aroma, color, texture, and taste) of jenang jubung. 2) To determine the best nutritional value of Jenang Jubung. This type of research is an experimental study with 3 treatments consisting of 3 levels of mocaf flour substitution 25%, 50%, 75%. The data collection method was carried out by organoleptic testing with a total of 35 panelists consisting of 7 trained panelists and 28 semi-trained panelists. Data analysis used was to find the mean value, single Anova (One Way Anova), and duncan. Furthermore, laboratory tests were carried out on the best products to determine energy, carbohydrates, fiber, protein, fat, ash content, vitamin B1 (thiamine), vitamin B6, vitamin E, vitamin C, potassium minerals, magnesium minerals, phosphorus minerals, calcium minerals, iron minerals, water content. The results of the analysis showed 1) Mocaf flour substitution had a significant effect on (chewy, shape, aroma, color, texture, and taste); 2) The nutritional content of the best jenang jubung was obtained energy 365.80kcal; carbohydrate 51.09%; fiber 2.91%; protein 9.86%; fat 12.91%; ash content 1.05%; vitamin B1 (thiamine) 1.08Mg; vitamin B6 0.92Mg; vitamin E 1.32Mg; vitamin C 4.08Mg; potassium mineral 5.11Mg; magnesium mineral 19.81Mg; phosphorus mineral 105.80Mg, calcium mineral 11.81Mg; iron mineral 2.11Mg; water content 22.16%.

This study aims to analyze how internal strategies and external challenges can influence the achievement of Regional Original Revenue targets at the Laboratory Technical Implementation Unit (UPTD) of the Public Works and Public Housing Agency (Dinas Pekerjaan Umum dan Perumahan Rakyat) of Cilacap Regency. The research object is the performance of the Laboratory Technical Implementation Unit (UPTD), a technical unit providing construction material testing services, which directly contributes to Regional Original Revenue in Cilacap Regency. The qualitative approach employed a case study method, and data collection techniques included interviews, observation, and documentation. The sample in this study was obtained purposively. The results indicate that internal strategies focused on superior testing methods such as core drilling, abrasion, and concrete compressive strength have been conducted. However, limited equipment, human resources, and the lack of accreditation are major obstacles. On the other hand, external challenges include the lack of updated Regional Regulation tariff regulations, the absence of formal obligations for the use of laboratory services for regional budget projects, and a saturated local market. These findings provide important implications for the Laboratory Technical Implementation Unit (UPTD) in emphasizing policy revisions, increasing internal capacity, and strengthening inter-agency coordination to increase Regional Original Revenue realization.

The low scientific literacy of elementary school students, influenced by the use of conventional learning methods and lack of interactivity, encourages the need for new innovations based on digital technology. This study aims to test the optimization of the use of digital technology as a strategy to improve scientific literacy through a quasi-experimental method with a pretest-posttest control group design. The research subjects consisted of 60 fifth-grade students from one elementary school, namely SDN Pondok Labu 03, taken from 2 classes, each consisting of 30 students (30 students in the experimental group and 30 students in the control group). The experimental group was given a digital technology-based science learning treatment, namely a virtual laboratory (Labster), and an educational application (Quizizz), for 8 weeks, while the control group used conventional methods. The research instruments included a scientific literacy test (HOTS questions) and student activity observation sheets. Data were analyzed quantitatively using t-test and ANOVA to compare the increase in scientific literacy scores between the two groups. The results showed that the experimental group experienced a significant increase in scientific literacy scores (N-Gain 0.72) compared to the control group (N-Gain 0.32). The research conclusion proves that the systematic integration of digital technology is effective in improving the scientific literacy of elementary school students at Pondok Labu 03.

This study aims to analyze the effect of high-lob technique on petanque sport pointing using a concrete field surface. The method used is descriptive research with implementation at the Petanque Laboratory of Surabaya State University. The subjects of the study were five Unesa petanque athletes who were selected based on their technical skills. Data collection techniques include field observation, skill tests, documentation, and data analysis using the Kinovea and Capcut applications. The results showed that at a distance of 6 meters, the release angle was 63.5°, the height was 3.53 m, the rolling distance was 35 cm, and the final result was 8.5 cm. At a distance of 7 meters, the release angle was 63.4°, the height was 4.01 m, the rolling distance was 53 cm, and the final result was 10.4 cm. At a distance of 8 meters, the release angle was 62.3°, the height was 3.99 m, the rolling distance was 59 cm, and the final result was 13.4 cm. Meanwhile, at a distance of 9 meters, the release angle is 60.3°, the height is 4.16 m, the roll is 53 cm, and the final result is 19.2 cm. All parameters have met the effectiveness criteria based on existing references, except for the rolling distances at 7, 8, and 9 meters which exceed the ideal limit. These results imply that adjusting the drop point and increasing the angle and height of the bounce can optimize the results of the high-lob pointing technique.

Marketing is the backbone of a business’s existence. Various ideas, creativity, and innovations in marketing continue to evolve in different forms. To attract a large number of consumers, some businesses engage in overclaim marketing. While this strategy may bring positive outcomes for some companies, it can also have negative consequences for others. One brand that has practiced overclaim marketing is Daviena Skincare. This study aims to analyze the impact of overclaim marketing on consumer trust in Daviena Skincare products. The research was conducted using a qualitative descriptive approach, with data obtained through digital tracing and observation. The findings indicate that overclaim marketing in the skincare industry, as practiced by Daviena Skincare, has negatively affected consumer trust. The overclaims identified include promises of instant results, false claims about premium ingredients, and unverified testimonials. An investigation by Doctor Detective revealed significant discrepancies between marketing claims and the actual product composition, such as Niacinamide, which was advertised at 10% but was not detected in laboratory tests. These findings contradict the marketed product benefits, leading to consumer disappointment and decreased brand loyalty. This phenomenon underscores the urgency for brands to be more transparent and ethical in their marketing strategies. Therefore, overclaim marketing practices must be eliminated to maintain the integrity of the industry and protect consumers’ rights to accurate information and products that align with their claims.

Bridge infrastructure is a vital component of transportation systems that is vulnerable to structural damage caused by dynamic loads, environmental factors, and aging. Early crack detection is crucial to prevent structural failures that may lead to catastrophic consequences. This study aims to develop a non-destructive detection method based on acoustic sensors to identify cracks in bridge structures with higher sensitivity and accuracy compared to conventional visual inspections. The research was conducted through laboratory experiments and field tests using acoustic sensors, data acquisition devices, and signal analysis software. The procedure included sensor installation on a bridge model, simulation of artificial cracks with varying sizes and positions, recording of acoustic wave signals, and data analysis using frequency spectrum, amplitude, and waveform pattern approaches. The results show significant differences between normal and cracked conditions in the frequency spectrum, where cracks produced amplitude anomalies at specific frequencies. Amplitude analysis revealed a positive correlation between crack size and acoustic signal intensity, while waveform pattern analysis demonstrated the influence of crack position on distortion levels. Cracks located at the center generated the highest distortion, followed by joints and edges. These findings confirm that acoustic sensors, particularly fiber-optic-based ones, offer advantages such as high sensitivity, reliability under complex environmental conditions, and the ability to detect subsurface cracks. The implications of this research highlight the potential development of an acoustic sensor-based structural health monitoring system integrated with real-time analysis software, thereby supporting preventive maintenance, extending infrastructure lifespan, and enhancing transportation safety.

Modern agriculture faces serious challenges such as climate change, soil degradation, and dependence on chemical fertilizers and pesticides, which negatively impact the environment and human health. To support sustainable food security, innovative and environmentally friendly solutions are required. One promising alternative is the use of endophytic bacteria as biological agents to enhance plant growth without relying on synthetic chemicals. This study aims to examine the role of endophytic bacteria in organic farming systems through a combination of laboratory tests and field experiments. The research stages include isolation and identification of endophytic bacteria from plant tissues, testing the ability of the bacteria to support plant growth in vitro, and applying it to organic farmland to evaluate resistance to pests and crop yields. The independent variable in the study is the type of endophytic bacteria, while the dependent variables include plant growth rates, pest resistance, and crop productivity. Data analysis was performed using descriptive statistics and ANOVA, followed by post-hoc tests to determine the effectiveness of the treatments. The results showed that treatments with endophytic bacteria, both singular and combined, significantly improved vegetative growth, reduced pest attacks, and increased crop yields compared to the control. The combination of bacterial isolates proved to have a stronger synergistic effect than single treatments. These findings demonstrate the potential of endophytic bacteria as natural biofertilizers and biopesticides to support environmentally friendly organic farming.