Physics learning in senior high school faces challenges in developing students' scientific reasoning ability. This study aims to examine students' scientific reasoning ability through project-based learning of briquette making and its effect on improving students' critical thinking ability, especially in SMA Negeri 1 Jatiroto, to improve a more effective understanding of physics. The research was conducted at SMA Negeri 1 Jatiroto, Lumajang Regency, in semester one of the 2024/2025 scholastic year. The population of the research sample was class X students, which was determined using homogeneity test and random sampling technique or purposive sampling. The research design used Quasi Experimental with pre-test and post-test. Data collection was done through tests, observations, interviews, and documentation. The pre-test and post-test results showed a significant increase in the experimental class, with a higher mean post-test result (84) than the control class (50). Data analysis displayed a significant difference between the two groups, indicating that the project-based learning model had a beneficial effect on enhancing performance students' scientific reasoning skills. Thus, project-based learning in briquette making is proven to be able to encourage increased understanding of physics concepts while developing students' critical thinking skills more effectively.

Kekambuhan gastritis terjadi pada individu yang memiliki kebiasaan makan tidak teratur. Berbagai faktor pemicu seperti makanan yang terkontaminasi bakteri, pola makan tidak teratur, penggunaan obat NSAID, konsumsi alkohol, merokok, stres, uremia, infeksi sistemik, trauma mekanik, dan kortikosteroid yang dapat menghambat sintesis prostaglandin sehingga sekresi HCl meningkat, menimbulkan iritasi pada lambung. Penelitian ini merupakan penelitian kuantitatif dengan desain cross-sectional yang bertujuan untuk mengetahui hubungan antara berbagai faktor risiko dengan kejadian kekambuhan gastritis di Puskesmas Putri Ayu, Kota Jambi. Jumlah populasi dalam penelitian ini sebanyak 729 orang, dengan sampel 98 responden diperoleh melalui accidental sampling. Instrumen adalah kuesioner pola makan, kuesioner DASS-42 dan kuesioner kekambuhan gastritis. Analisa bivariat menggunakan uji Kendall’s Tau-b. Hasil menunjukkan adanya hubungan pola makan (p value = 0,008) ; tingkat stres (p value = 0,044) dengan kekambuhan gastritis. Diharapkan peneliti selanjutnya melakukan penelitian serupa dengan menambah faktor lain yang berhubungan dengan kekambuhan gastritis.

Promoter methylation of the hTERT gene in blood DNA has been proposed to be an epigenetic molecular clock because it is negatively correlated with ageing. Saliva is an alternative source of DNA because it contains buccal cells. Currently, the correlation of hTERT promoter methylation and ageing using saliva is not known. This study aimed to determine: first, the correlation between hTERT promoter methylation and ageing in saliva, as a source of non-invasive DNA sampling, instead of blood was determined. Second, the influence of sex on the methylation of the hTERT promoter in ageing was evaluated. A cross-sectional study design was used, and 119 subjects were recruited, consisting of 25 children (1-5 y.o), 42 teens (17-19 y.o), 16 adults (20-50 y.o), and 36 elderly (60 to 84 y.o). Promoter methylation of the hTERT of extracted DNA was determined using the MSRE (methyl-specific restriction enzyme) method. The relationship between age and the percentage of hTERT methylation was assessed using the Pearson test. The percentage of hTERT methylation in saliva DNA was negatively correlated with age r= -0.4305 (p-value <0.05). Negative correlation was also found in men (r= -0.376) and women (r=-0.43). Negative correlation between hTERT and ageing has been confirmed in saliva as a noninvasive sampling method. The benefit of this research in ethical and social considerations may encourage a greater participation in ageing research, particularly in underprivileged communities, thus democratising access to scientific advancements in longevity studies.

The success of budding is influenced by various factors, including the technique employed and the application of Plant Growth Regulators (PGRs). This study aimed to determine the most effective budding technique and type of PGR to enhance the success rate and initial growth of Siam Pontianak citrus (Citrus nobilis var. microcarpa) seedlings. The research was conducted from March to May 2025 in Batu City, East Java, using a Factorial Randomized Complete Block Design (RCBD). The first factor was the budding technique: patch budding, T-budding, and chip budding. The second factor was the type of PGR: control (water), young coconut water (500 ml/L), and Atonik (1 ml/L). The analysis of variance (ANOVA) revealed no significant interaction between the two factors. However, as independent factors, the chip budding technique resulted in the highest success percentage and number of shoots (P0.05). The application of coconut water led to the fastest sprout emergence, as well as the greatest shoot height and number of leaves compared to the other PGR treatments and the control. It is concluded that chip budding is the superior method for graft union success, while coconut water is the most effective PGR for promoting the initial vegetative growth of the budded seedling.

Maternal anxiety during the childbirth process is a common psychological condition that can potentially increase the risk of complications, prolong labor, and reduce the likelihood of a positive birthing experience. High anxiety levels in mothers may interfere with the effectiveness of labor, impact maternal and fetal well-being, and lead to increased medical interventions. One of the most important support systems during labor is the presence and active involvement of the husband. The husband’s role is not only limited to being present but also includes providing emotional, physical, and motivational support to the mother. Recognizing the importance of this role, this community service program was designed to enhance husbands’ understanding and skills in supporting their wives during childbirth, thereby helping to reduce maternal anxiety.The program consisted of several stages, including the delivery of structured health education sessions on maternal needs during labor, demonstrations of effective communication techniques, simulations of support during different stages of childbirth, and interactive discussions to address questions and share experiences. Through these activities, participants were encouraged to build empathy, strengthen their knowledge about labor, and develop the confidence to assist their wives effectively. The results of the program indicated a noticeable improvement in the husbands’ awareness of the importance of their role, as well as increased confidence in providing both emotional reassurance and physical assistance. Participants reported feeling better prepared to accompany their wives, manage unexpected situations, and foster a more supportive environment during childbirth. This initiative highlights the significant impact that targeted education and training for husbands can have on maternal psychological well-being, ultimately contributing to safer and more positive birth experiences.

Camshaft lift is an important parameter that determines the height of the valve lift, calculated from the valve position when it is completely closed to the fully open position. This component plays a crucial role in regulating the flow of the air and fuel mixture into the combustion chamber. This study aims to improve the performance of a 200cc 4-stroke motorcycle engine through camshaft lift modification, which is expected to affect the characteristics of engine torque and power. Modifications were carried out by designing two types of modified camshafts, namely series A and series B, as a comparison to the standard camshaft. The research method used is experimental testing using a dynamometer to measure engine torque and power at various speeds, ranging from 4,000 to 10,000 RPM. The data obtained were analyzed to determine the effect of each type of camshaft on engine performance. The test results show that the B series camshaft provides the most significant performance improvement compared to the standard and A series camshafts. At 7,500 RPM, the standard camshaft produces an average torque of 19.2 Nm, the A series camshaft 19.6 Nm, while the B series camshaft reaches 21.2 Nm. Meanwhile, at 10,000 RPM, the average power of the standard camshaft is recorded at 22.2 HP, the A series camshaft 24.1 HP, and the B series camshaft reaches 26.3 HP. This increase indicates that the camshaft lift modification is able to optimize the duration and height of the valve opening, so that the supply of the fuel and air mixture to the combustion chamber becomes more efficient. Thus, camshaft modification, especially the B series, is an effective and applicable solution in increasing the performance output of a 200cc motorcycle engine without having to make major changes to the overall engine structure.

MSMEs play a strategic role in supporting the growth and stability of the national economy (Endra et al., 2024), especially in the culinary sector which continues to grow. However, a fundamental problem commonly experienced by MSMEs is the ability to create visually attractive and professional promotional elements. One example is BentoDay, a food business in West Jakarta, which still relies on simple visual promotions through social media without optimal content packaging. This activity aims to develop the digital promotional capacity of participants through program mentoring and training that focuses on creating logos and product catalogs using the Canva application, a digital tool used for easy-to-use visual design purposes that allows even beginners to create posters, banners and social media content (Akbar et al., n.d.). Initial observations, direct training, intensive mentoring, and evaluation of participants' design results are part of the mentoring activity approach. The results of the activity implementation illustrate that participants have the ability to independently produce promotional materials, such as business logos and product catalogs with more attractive and consistent designs. This training not only improves participants' design skills but also has a positive impact on the digital marketing strategy of culinary businesses. MSMEs can improve their competitiveness and increase sales by implementing better design. This approach demonstrates the importance of acquiring digital skills for MSMEs to strengthen their brand identity and expand their consumer reach (Andari, N., Sari, D.P., & Hidayat, 2025). Therefore, using Canva has proven useful for enhancing the competitiveness of MSME digital promotions.

This study aims to determine and analyze the potential and challenges of culinary businesses, the implementation of digitalization and halal certification, and the development of an effective and sustainable model for the "Resto Apung" culinary business to support food economic independence in coastal villages. The research was conducted at "Resto Apung" using a qualitative descriptive method with data collection techniques such as interviews, observations, and focus group discussions. The findings show that the "Resto Apung" business holds significant potential as a culinary destination with a strong attraction due to its unique location and menu offerings based on local marine products. However, several challenges hinder its development, including low digital literacy among business managers, lack of structured and professional management systems, and the absence of halal certification which is crucial in targeting broader Muslim consumer segments. Currently, digitalization has only been applied in the marketing aspect, primarily through social media, while other aspects such as financial management, customer service, and operational processes are still managed conventionally. Nevertheless, the managers have shown awareness and initiatives to improve, especially in recognizing halal certification as a strategic competitive advantage. The proposed development model integrates digitalization into all aspects of business management, enhances human resource capacity through technical and managerial training, and includes efforts to obtain halal certification. This holistic approach is expected to increase the competitiveness of the culinary business, optimize local potential, and ultimately contribute to the achievement of food economic independence in coastal areas.

Drinking water is a basic human need that must meet health requirements to be suitable for direct consumption without causing health risks. Drinkable water must be free from various contaminants, both physical, chemical, and microbiological that can harm the human body. One of the sources of drinking water that is widely used by the community is refillable drinking water (DAMIU), which is now growing due to its affordable price and ease of access. However, the water quality from DAMIU is often a concern due to potential contamination due to sanitation that does not meet standards. This study aims to analyze the sanitary conditions of the refillable drinking water depot (DAMIU) and assess the quality of drinking water based on physical, chemical, and microbiological parameters in the working area of the Punti Kayu Health Center, Palembang. A total of 15 DAMIU are the object of research that are examined through laboratory tests and direct observation of the sanitary conditions and equipment of the depot. The results showed that all DAMIU (100%) had met the general sanitation requirements, such as room cleanliness, equipment, and workers. However, microbiological testing found that 33.4% of the water samples contained E. coli and Coliform bacteria, indicating the presence of contamination. In addition, all samples (100%) did not meet the ideal drinking water pH requirements, and as many as 40% of the samples had aluminum content that exceeded the threshold set by the Indonesian Minister of Health. From these findings, it can be concluded that although the sanitary conditions of DAMIU are relatively good, the quality of the drinking water produced still requires serious attention.

This qualitative case study investigated the factors and impacts of English language learning anxiety among students at SMP Muhammadiyah Tanjungpinang. The research focused on students from the 7th, 8th, and 9th grades during the academic year 2024/2025. A total of 32 students across all grade levels were involved in the study. The researchers initially conducted classroom observations to identify students who exhibited signs of anxiety during English lessons. Based on these observations, eleven students were selected as participants for semi-structured interviews and more detailed classroom observations. The research aimed to explore how anxiety manifests in the classroom and how it affects students' language acquisition in a unique socio-educational environment. The data collected through interviews and observations were analyzed qualitatively by interpreting students’ responses and behavioral patterns in class. The findings revealed that three primary types of language anxiety—Communication Apprehension, Test Anxiety, and Fear of Negative Evaluation—were commonly experienced by the students. These forms of anxiety were often interconnected, compounding the emotional barriers students faced in English learning. One of the key contributing factors was the students’ fear of peer ridicule, especially within a tightly bonded student community. Many of the participants were affiliated with orphanages connected to the school, which created a unique emotional and social environment. This setting, while supportive in many ways, also contributed to heightened sensitivity to peer judgment and a strong fear of making mistakes. As a result, the affective filter among these students was notably high, significantly hindering their willingness to participate and ultimately affecting their English language acquisition.