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Zinc (Zn) is one of the most common heavy metal contaminants found in industrial wastewater and solid residues such as slag, electroplating waste, and metal ash. At excessive concentrations, Zn can cause environmental disturbances, including toxicity to aquatic organisms, disruption of microbial activity, and groundwater contamination. Long-term exposure may also lead to bioaccumulation and potential health risks to humans. This article presents a comprehensive literature review that discusses the chemical properties of Zn, its environmental behavior, and the development of recent treatment technologies within the last five years. Several techniques, including adsorption using modified or composite materials, biosorption utilizing microalgae and agricultural biomass, as well as solidification–stabilization with amendment agents such as biochar or iron-sulfide compounds, are evaluated and compared. The literature indicates that no single treatment method is universally effective for all waste types; therefore, hybrid or integrated treatment systems are considered more efficient and sustainable. Based on the reviewed evidence, this study proposes an engineering concept that emphasizes environmental safety, cost-effectiveness, and industrial applicability.

Anemia is a problem of health in young women. Anemia is a condition in the concentration levels of hemoglobin in the blood is low, one of the efforts to improve the levels of Hemoglobin by non Pharmacology given soy edamame. Is a kind of soy beans which the iron content of substance more than other types. In addition to iron, also contained Vit C, B12, and folic acid, which is also a constituent of hemoglobin in the blood. The purpose of this research is to know the effect of granting soy edamame to increased levels of hemoglobin in on young women. The research design used was quasy eksperiment. Population of young women who are experiencing anemia in boarding schools of Tahfiz Hisbah Al Fatih as many as 20 people, with the total sampling techniques. Research instrument is the observation sheet and tool checks digitally Hemoglobin. Results of the study were analyzed using paired t-test Test and independent t Test. The results obtained from this research is the following value mean increased levels of Hb after given Soy edamame was 0.46 gdl and mean increased levels of Hb after administering a local soybean is 0.18 gdl. This indicates that after the granting of the soy edamame tablet better if compared to a local soybean delivery after this. Research analysis of Hb levels after administering a local soybean or edamame soybeans gained ρ-value 0.006 (α = 0 .05), then it can be inferred that H0 is rejected and there is meaning accepted H1 influence awarding of soy edamame to increased levels of Hb teen daughter in boarding schools of Tahfiz Hisbah Al Fatih. For young women in particular are expected to eat green vegetables and legumes, especially soy edamame to prevent as well as treat mild anemia.

The puring plant (Codiaeum variegatum), which has been known as an ornamental plant, apparently has significant therapeutic potential, supported by the presence of secondary metabolites such as flavonoids, tannins, saponins and alkaloids. Various modern studies report the biological activity of croton leaves, including anti-cholesterol, anti-hyperglycemia, antibacterial effects, and their use in biosurfactant formulations. However, studies on how varying extract concentrations influence bioactivity parameters quantitatively are still limited, especially in the context of dose-response relationships involving many biological parameters in one series of research. Therefore, this research was conducted to evaluate eight bioactivity parameters, namely PSM, SSSP, DSSP, SL, RO, SM, PSL, and ANA at croton leaf extract concentrations of 1%, 2%, and 4%. This research uses a laboratory experimental approach by extracting croton leaves through a maceration method using ethanol, then formulated in three concentration levels. Each parameter was analyzed quantitatively to observe the pattern of changes in biological response to variations in the dose administered. The results showed that most of the PSM, SSSP, DSSP, SL, and PSL parameters showed an optimum response at a concentration of 2%, which indicates that there is a most effective dose point before a decrease in activity occurs at the highest concentration. In contrast, several parameters such as RO, SM, and ANA showed a more fluctuating response, even the ANA parameter gave the highest value at a concentration of 4%, indicating that certain activities require higher compound levels to be achieved. In general, the response pattern found was not linear, but instead formed an optimum curve typical of the bioactivity of plant extracts. These findings confirm that determining dosage is very important in the use of croton leaf extract, both for pharmacological purposes and for the formulation of natural ingredient-based products.

This community service activity was carried out to increase students' understanding of the dangers of drug abuse and its impact on academic achievement and the future of the younger generation at SMK Negeri 1 Pagelaran. The problem of low student awareness and limited access to accurate information about drugs was the main background for this activity. The community service program was designed using interactive socialization and education methods that included direct counseling, educational video screenings, group discussions, and the provision of supporting media in the form of leaflets as a means of reinforcing the material. The results of the activity showed an increase in students' knowledge and understanding regarding the risks of drug abuse, particularly its impact on decreased learning concentration, physical and mental health disorders, and weakened motivation and academic achievement. In addition, students showed high enthusiasm during the activity and were able to identify internal and external factors that can encourage and prevent involvement in drug abuse. This activity made a positive contribution to the school as a preventive effort and became the basis for the development of a sustainable and more comprehensive drug prevention program.

In the context of the influence of social media on the learning concentration of Students in the learning concentration if students in the J-PBSI (Indonesia Language and Literature Education Department) at Lambung Mangkurat University, social media is one of the most influential technological products in the lives of students today. Students in J-PBSI at Lambung Mangkurat University are increasingly dependent on various digital platfroms to support their educational processes. Theses applicantions have become essential tools for socializing and sharing information with other students. The influence of social media use on the learning concentration of J-PBSI students shows that many students experience a lack of focus while studying due to the distracting effects of social media. This distraction often reduces students’ ability to contcentrate, which in turn affects their overall to concentrate, which in turn affects their overall learning performance. This study uses a descriptive qualitative method with in-depth interviem techniques conducted with several students from the Indonesia Language and Literature Education Department. The results of the most students use sosial media on a daily basis. High usage of social media tends to decrease learning concentration because students are often distracted by notifications of the urge to open social media while studying. However, there are also J-PBSI students who use social media effectively, utilizing it as an additional learning resource. Thus, the influence of social media is twofold, depending on the intensity and purpose of ir use. This study aims to determine the extent to which social media affects students’ learning concentration. It is also expected to provide a better understanding of how social media influences the learning process. Students are encouraged to use social media wisely and responsibly so that is does not interfere with their focus on studying, but instead supports their academic activities.

This study aims to analyze in depth the role of drumband extracurricular activities in developing motor and cognitive abilities of early childhood at Aisyiyah Bustanul Athfal 50 Kindergarten, Surabaya. This study uses a qualitative approach with data collection methods through direct observation, in-depth interviews, and the distribution of questionnaires involving teachers, parents, and students as research subjects. The results show that drumband activities provide a positive contribution to the development of gross and fine motor skills of children, especially through rhythmic movement exercises, hand-eye coordination, and body control when playing musical instruments. In addition to motor aspects, drumband activities also play a role in improving children's cognitive abilities, such as concentration, memory, the ability to follow instructions, and understanding musical patterns and rhythms. Children's active participation in drumband activities also helps shape discipline, the ability to work together in groups, and increases children's self-confidence. Thus, drumband extracurricular activities can be used as an effective and enjoyable learning medium to support the motor and cognitive development of early childhood holistically and sustainably.  

The purpose of this study is to evaluate income inequality and poverty as key indicators of uneven economic development in North Sumatra Province in 2024. This study analyzed various secondary sources, including BPS reports, SINTA-indexed national journals, and regional economic policy publications. The results show that regencies in the west coast and mountainous regions of North Sumatra tend to be lagging behind, while urban areas such as Medan and Deli Serdang have the highest concentration of economic growth, meaning that income inequality remains at a moderate-high level. The finding that economic progress remains uneven is reinforced by the fact that the poverty rate remains higher than the national average. From the results of this study, not only economic factors influence inequality and poverty, but also structural factors such as infrastructure access, human labor quality, and regional fiscal inequality. Therefore, more inclusive and integrated policies are needed to address inequality and improve welfare across all provinces.

Extraction is a crucial stage in obtaining bioactive compounds from natural materials that have potential as medicinal, cosmetic, or nutraceutical ingredients. Among the various extraction methods available, maceration remains one of the most widely used techniques due to its simplicity, cost-effectiveness, and ability to maintain the stability of active compounds. The maceration process involves soaking powdered plant material in a suitable solvent at room temperature for a certain period, accompanied by periodic stirring to facilitate the diffusion of active compounds into the solvent. This method is particularly effective for extracting polar and semi-polar compounds such as flavonoids, phenolics, and essential oils that are sensitive to heat. The review shows that the effectiveness of maceration is influenced by several key factors, including the type and concentration of solvent, particle size of the material, duration of soaking, and stirring frequency. The use of ethanol with higher concentrations generally yields greater extract recovery and higher levels of active compounds. In addition, maceration is considered environmentally friendly because it requires no excessive heating and can employ safe, natural solvents. Therefore, despite the development of advanced extraction technologies, maceration remains a relevant, practical, and efficient method for phytochemical extraction, especially in laboratory research and small-scale herbal industries.          

Acute Respiratory Infections (ARI) in the working area of Mulyorejo Public Health Center, where an aluminum factory is located, rank first among the ten most common diseases. This study aims to analyze the influence of sociodemographic characteristics and PM2.5 exposure on ARI complaints in the aluminum factory area of Payageli Village, Deli Serdang Regency. The cross-sectional observational study involved 160 housewives living within a radius of 10–1500 meters from the factory’s chimney. The analysis included univariate, bivariate, and multivariate methods. Results showed that 58.1% of respondents experienced ARI symptoms in the past month. The average ambient (outdoor) PM2.5 concentration measured from three sampling points was 12.3 µg/m³, which did not exceed the WHO standard (<15 µg/m³). The highest concentration was recorded in the southern direction (15.5 µg/m³). Bivariate analysis indicated that education (p = 0.010), direction of house location (p = 0.001), and indoor PM2.5 concentration (p = 0.006) were significantly associated with ARI. Multivariate logistic regression analysis showed that the most dominant factor influencing ARI was indoor PM2.5 concentration (p = 0.039), followed by education (p = 0.013) and direction of house location (p = 0.001). This study provides a scientific basis for air quality control and housing environment improvement to reduce the risk of environmentally related diseases in industrial zones.

Pediculus humanus capitis, according to the WHO, is classified as a skin disease and ectoparasite in the list of neglected tropical diseases. The cause can infect the scalp, leading to many children suffering from iron deficiency and anemia. Its spread occurs through shared items. Therefore, traditional insecticides such as srikaya seeds and kemiri seeds, which contain saponins and flavonoids capable of killing head lice, are required. The obective of this study is to determine the most effective concentration, compare their efficacy, and determine the killing time of both extracts. The experimental research method involved treatments at concentrations of 20%, 40%, and 60% with four repetitions. The results of this study indicate that there is an effect of srikaya seed extract with kemiri seeds in terms of concentration and time on lice mortality, as shown by a two-way ANOVA test with a p-value of 0.000 (P<0.05). In the Tukey test, the average mortality rate for srikaya seeds was 4, and the average mortality rate for kemiri seeds was 3. The concentration of srikaya seed extract killed 50% of head lice LC50 at a dose of 0,14%, while the concentration of kemiri seed extract killed 50% of head lice at a dose of 0,28% with contact times of 30 and 60 minutes. This demonstrates that srikaya seed extract at a dose of 0,14% is effective in causing mortality in head lice (Pediculus humanus capitis)

The advancement of digital technology has transformed children's media consumption patterns, marked by the growing use of short video content such as TikTok, YouTube Shorts, and Instagram Reels. This study aims to explore the psychological impacts of short video addiction on elementary school-aged children, focusing on cognitive, affective, and social aspects. Using a phenomenological qualitative approach, data were collected through in-depth interviews, observation, and documentation involving 10 children, 7 parents, and 4 teachers from two elementary schools. The findings indicate that children who intensively access short videos (more than two hours per day) experience reduced concentration, emotional instability, and social withdrawal. These results were analyzed using theoretical frameworks from Piaget (cognitive), Krathwohl (affective), Erikson and Bandura (social), and Young’s digital addiction model. The main conclusion reveals that short video addiction negatively affects children's developmental tasks, including logical thinking abilities, emotional regulation, and social skills. Therefore, digital literacy-based interventions and active supervision by parents and teachers are essential to prevent the long-term detrimental impacts on children's psychological development.

This systematic literature review examines the effectiveness of game-based learning (GBL) interactive e-modules in improving students' learning concentration. The study synthesizes the findings from eight research articles published between 2012 and 2025. The analysis reveals that GBL-based e-modules significantly enhance learning motivation, with validity rates ranging from 90% to 99%. Additionally, the use of interactive platforms such as Wordwall, Gimkit, and other digital tools effectively supports various learning styles, particularly visual and kinesthetic learners. The review highlights that student engagement levels improve significantly, ranging from 67.42% to 87.12%. Furthermore, these e-modules positively impact learning outcomes, providing a more engaging and interactive approach to education. By integrating gamification elements, the e-modules create a dynamic and motivating learning environment that fosters better concentration and focus among students. The review concludes that GBL-based e-modules are an effective educational strategy, particularly in geography education at the high school level. These tools not only engage students in a fun and interactive manner but also improve their ability to focus, leading to enhanced learning experiences. As a result, incorporating GBL-based e-modules in educational practices can contribute to better learning concentration and overall academic performance.

Early Childhood Education is a fundamental phase in the formation of a child's character and basic skills. This period, known as the golden age, is crucial for providing appropriate stimulation so that all aspects of a child's development can develop optimally. The limited learning resources at the Bajo Sayang Early Childhood Education on Boleng Island, West Manggarai Regency, drove the need for innovative, simple yet meaningful learning media. This community service activity aims to implement interactive storytelling as a learning medium that can stimulate the cognitive and social-emotional aspects of early childhood. The implementation method used a participatory and interactive approach, where children are actively involved through questions and answers, emotional expression, and supporting activities such as singing and dancing. The results of the activity indicate that the interactive storytelling method can improve children's concentration and courage in expressing opinions. Furthermore, children also demonstrate a better understanding of basic emotions such as happiness, sadness, and anger, as well as increased empathy for the story characters.

Mathematics learning demands optimal student activity, concentration, and participation. However, many students still exhibit a passive attitude during the learning process, resulting in learning outcomes that have not reached the expected level. This article aims to analyze various effective classroom management strategies for fostering enthusiasm for learning and increasing student participation in mathematics learning. This study uses a library research method by reviewing various scientific sources, such as journals, academic books, and relevant research reports. The results of the study indicate that effective classroom management plays a crucial role in creating a conducive, interactive, and student-centered learning environment. Teachers function not only as transmitters of material but also as facilitators and administrators capable of building positive social relationships and motivating students to actively think and participate. Preventive, curative, and repressive classroom management strategies have been proven to improve student focus, motivation, and learning outcomes, especially when integrated with learning approaches such as discovery learning, teacher-centered learning, and the use of creative methods like squad games and block systems. Thus, adaptive and innovative classroom management is key to realizing participatory, enjoyable, and meaningful mathematics learning for the development of students' overall potential.

Water plays a fundamental role in sustaining human life, particularly as a source of drinking water. Nonetheless, the consumption of water that does not comply with established health standards can result in illnesses such as diarrhea and vomiting. In the Patrang District, the use of refillable drinking water has gained popularity as an economical substitute for bottled water. Despite its convenience, there are growing concerns about the microbiological safety of refillable drinking water, especially regarding contamination by Coliform and Escherichia coli bacteria, which serve as key indicators of water hygiene and safety. The objective of this research was to determine the contamination levels of Coliform and Escherichia coli bacteria in refillable drinking water. The study utilized a quantitative research design with descriptive analysis and employed the Most Probable Number (MPN) method for testing. Data collection took place from May to June 2024, comprising five water samples labeled X, Y, Z, A, and B, obtained from refillable drinking water depots in Patrang District using a simple random sampling approach. The results indicated that out of the five samples tested, the sample labeled Z was positive for Coliform with an MPN value of 920 cfu/mL, while the sample labeled A was positive for both Coliform and Escherichia coli with an MPN value of 2,000 cfu/mL. From these findings, two samples (Z and A) were identified as contaminated, with the highest bacterial concentration found in sample A, which had an MPN value of 2,000 cfu/mL

The root of Mimosa pudica L. contains mimosine, a toxic alkaloid, as well as tannins that exhibit toxic properties, potentially disrupting pancreatic function. Exposure to sufficiently high concentrations of toxic compounds can impair cellular metabolism, leading to irreversible damage. One of the cellular changes induced by cytotoxic compounds is the reduction in the size of pancreatic Langerhans islets. This study aimed to investigate the effects of ethanol extract of Mimosa pudica roots on the diameter of Langerhans islets and β-cell damage in the pancreas of mice. Twelve mice were randomly divided into four groups, each consisting of three animals. Group I served as a control and did not receive the extract, whereas Groups II, III, and IV were administered root extract at doses of 10 mg/g BW, 100 mg/g BW, and 1000 mg/g BW, respectively, for 14 consecutive days. The results demonstrated that administration of ethanol extract of Mimosa pudica roots reduced the diameter of pancreatic Langerhans islets in a dose-dependent manner, with higher doses causing more severe β-cell damage. These findings highlight the need for caution in the use of Mimosa pudica roots as traditional medicine or dietary supplements.

This study aims to determine the effect of digital media use on children's academic achievement. Rapid technological developments have made digital media a crucial part of the modern educational process. Using a qualitative descriptive approach, this study provides an in-depth description of how digital media is used in learning activities and its impact on student learning outcomes. Data were collected through observations, interviews, and documentation of students, teachers, and parents involved in the technology-based learning process. The results indicate that digital media plays a significant role in increasing children's interest and motivation in learning, enriching their knowledge base, and helping them understand the material more effectively. However, the study also found that excessive, unsupervised use of digital media can lead to decreased concentration, the development of procrastination, and decreased social interaction among students. Therefore, the use of digital media needs to be balanced with guidance and supervision from teachers and parents to ensure its use remains aligned with educational goals. In conclusion, digital media has significant potential to improve children's academic achievement when used wisely, purposefully, and in accordance with each student's individual learning needs.

Free-range chicken eggs are a source of high-value animal protein but are susceptible to quality deterioration during storage. This study aimed to evaluate the effect of Averrhoa bilimbi L. leaf extract concentration and storage duration on the internal quality (Egg White Index, Egg Yolk Index, Haugh Unit, yolk color) and pH of free-range chicken eggs. An experimental method was employed using a Completely Randomized Design (CRD) with a 4 x 4 factorial pattern. The first factor was leaf extract concentration (0%, 5%, 10%, 15%), and the second factor was storage duration (7, 14, 21, and 28 days). The results showed that immersion in 5% Averrhoa bilimbi L. leaf extract significantly maintained internal egg quality compared to the control up to 14 days of storage. This treatment produced optimal values for the Egg White Index, Egg Yolk Index, Haugh Unit, and yolk color score, while also inhibiting the pH increase indicative of egg spoilage. However, an excessively high concentration (15%) resulted in physical quality degradation. It is concluded that Averrhoa bilimbi L. leaf extract has potential as an effective natural preservative for maintaining the freshness of free-range chicken eggs, with the best concentration at 5% for short- to medium-term storage.

In Iranian Traditional Medicine, some herbs like Achillea millefolium, commonly known as yarrow, are implicated as appetite enhancers. However, there is not enough research evidence to prove their actual effect. Achillea millefolium is a dicot which belongs to the family Asteraceae. The purpose of this study was the analysis Achillea millefolium based on a bioinformatic study and toxicity test on the chicken embryo. This research method consisted of conversion of nucleotides into amino acids, analysis of the three-dimensional structure of Achillea millefolium protein, epitope and Allergen Proteins, antigens and toxins and toxicity test on the chicken embryo. In addition, this study also obtained the results of proteins that are epitope, antigenic, non-allergenic and non-toxic and toxicity test on the chicken embryo was 250 ng/egg.. Morphological description of the embryo on the 21st day after injection, at a concentration of 250 ng of Mentha piperita/egg product, an abnormal embryological picture was obtained. Chicken Embryo Weight and Body Length Measurements were carried out in chicken embryos. Need research for other species of plant.

This research aims to determine the influence of the role-playing method on the creativity of early childhood at Miftahul Jannah TPA. Creativity as an important aspect of development needs to be stimulated from an early age through activities that are fun and meaningful for children. This research uses a quantitative approach with a pre-experimental design type one group pretest-posttest design, where researchers measure creativity before and after role-playing treatment. The research results show that the role playing method has a positive influence on the development of children's creativity. This can be seen from the increase in scores on several indicators of creativity, such as the ability to generate ideas, elaboration and concentration. The elaboration indicator received the highest score in the very good category, indicating that children were able to add details and enrich the storyline during role play. However, the indicators of flexibility and authenticity are still in the poor category and require further stimulation. Overall, an average creativity score of 54 was obtained, which shows that role playing is effective in stimulating children's creativity. These findings emphasize that role-playing methods need to be applied variedly and continuously in learning to optimize the creativity of early childhood.