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The aim of this study is to identify the factors that cause learning difficulties among students in biology lessons in class XI at SMA Negeri 2 Tondano during the 2024/2025 academic year. The identified issues include students having difficulty understanding the material taught, lacking focus during lessons, ineffective teaching strategies, and low student motivation. This research uses a descriptive approach with a qualitative design, where data was collected through interviews and documentation. The study was conducted from November 6 to November 28, 2024, with 18 class XI students as the subjects. Interviews were conducted using 100 prepared questions. Data analysis was performed descriptively with percentage calculations. The results indicate that internal and external factors influence the factors causing learning difficulties in biology lessons for class XI students. Internal factors include interest (26.5%), motivation (35.9%), physical health (38.3%), intellectual ability (28.6%), attitude (43.4%), learning attention (32.3%), learning readiness (48.9%), talent (42.5%), physical condition (25.3%), and emotional factors (32.5%), all of which are categorized as low. External factors include family environment (48.9%), school environment (45.6%), interaction with teachers (42.7%), interaction with peers (35.4%), facilities and infrastructure (54.6%), technology and learning media (63.6%), curriculum (65.4%), learning environment at home (52.3%), family economic conditions (56.7%), and school education policies (43.5%), with most of these external factors showing a low to moderate category. This study concludes that class XI students at SMA Negeri 2 Tondano experience the most significant learning difficulties related to external factors, such as the curriculum, and internal factors, such as students' learning readiness.

The Jelekong landfill was a temporary landfill site following a landslide at the Leuwigajah landfill. TPA Jelekong was officially closed at the end of 2005 because it was no longer able to accommodate the increasing volume of waste. However, the impact of activities from the former landfill still has the potential to pollute the environment, especially groundwater sources. The research aimed to identify the physical and chemical parameters of water in the Jelekong ex-landfill case study area and the surrounding area, and to compare the physical and chemical parameters of water between the Jelekong ex-landfill and the landfill that is still operating (Sarimukti landfill). Data were obtained from 4 water sample points and tested using several test methods, namely Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Ion Chromatography (IC), alkalinity, and stable water isotopes. The results showed that the physical characteristics of the Jelekong area generally have a neutral pH with one point having an alkaline pH (JL-02) due to interaction with andesite lithology and the highest DO concentration at point JL-02. While the Sarimukti landfill has a pH value of 7.89-8.27 indicating the result of high bicarbonate concentrations, the TDS value of 15700-18200 ppm indicates the large number of ions and solutes derived from organic and inorganic waste. Piper diagrams show two water facies in the Jelekong area, Ca-HCO3 and Na-HCO3. Sample JL-03 indicates a mixture with landfill leachate due to high Cl and SO4 concentrations. Sample JL-01 still indicates leachate because when compared to the sarimukti sample, the Cl and SO4 concentrations are still quite high indicating a result of both organic and inorganic waste. Stable isotope test results indicated that the water was derived from local precipitation.

Background: Menstrual disorders that are often found in women include late menstruation, and the amount of menstrual blood. Almost 75% of adolescents experience menstruation, including irregular cycles, pain, long and heavy bleeding during menstruation. The menstrual cycle is not only influenced by biological factors such as lifestyle, hormonal disorders, nutritional status, but can also be influenced by social and environmental factors. The purpose of this study was to determine the factors that influence the menstrual cycle in adolescent girls at MAN 1 Semarang City. Method: This type of research is quantitative with a cross-sectional approach. The sample of this study amounted to 168 respondents. The respondent selection used probability sampling technique. This study used univariate, bivariate, and multivariate analysis tests. The analysis used was Spearman's rho and multiple logistic regression. Results and Conclusions: The results of this study indicate that the factors age, menarche, diet, nutritional status, and hemoglobin levels have no relationship to the menstrual cycle in female adolescents, but from the factors of stress, physical activity, fast food consumption habits, and sleep quality there is a relationship to the menstrual cycle in female adolescents at MAN 1 Semarang City where for stress level obtained p value: 0.002, physical activity with p value: 0.012, fast food consumption habits with p value: 0.035, and sleep quality with p value: 0.022. The factors that most influence the menstrual cycle in female adolescents at AN 1 Semarang City are stress levels with p value 0.002 and Od Ratio 3.365.

Adolescence is a time of fast physical and psychological development. Between the ages of 10 and 19, adolescence takes place during the childhood and adulthood periods. Teenagers are particularly susceptible to abnormal behavior, such as bullying. Bullying is common in schools and can be brought on by bad settings or family dynamics. The effects of bullying behavior include tension, anxiety, and sadness. Stress usually occurs where bullying demands are usually like cognitive environments, personality. Untreated stress in teenagers can result in substance abuse, suicidal thoughts, and other negative interactions. Method: This study uses a cross-sectional technique and is classified as quantitative research. Female students from SMP Islam Sultan Agung 4 Semarang served as the sample. Simple random sampling was the method employed, with 114 participants. The chi square test was the correlation test employed in this investigation. Results: Based on the results of the analysis, it was obtained that of the 114 respondents, most of them had age characteristics of 13 years as many as 51 or 44.7%, and were female as many as 114 or 100.0%. According to the study's findings, 67.5% of female students reported having high stress levels, while 63.2% reported moderate verbal bullying. A p value of 0.035 was revealed by statistical testing that used the chi square test. Conclusion: Stress levels (victims) and the prevalence of verbal bullying behavior in female teenagers are closely correlated (p value 0.035).

Violence against children often occurs in various places, whether at home, school, or in the surrounding environment. Data from the Ministry of Women's Empowerment and Child Protection (KPPPA) shows that from 2015 to 2023, incidents of violence against children have been increasing. The perpetrators of such violence are frequently the children's own parents or acquaintances. Common forms of violence against children include physical abuse, emotional abuse, sexual abuse, neglect, and exploitation. The aim of this research is to explore the role of pastors as a solution to prevent violence against children. This study employs a qualitative descriptive approach based on literature review. The roles of pastors in combating violence against children include providing education and awareness, family counseling, building a caring community, and conducting counseling sessions.

Typhoid fever is one of the main causes of death and morbidity in densely populated areas and unhygienic environments. The most common causative agent of typhoid fever in children is Salmonella typhii. Typhoid fever is enteric fever with main clinical symptoms such as abdominal pain and fever. Dengue Hemorrhagic Fever (DHF) is an infectious disease caused by dengue viruses types I-IV with clinical manifestations of fever lasting 2-7 days accompanied by bleeding symptoms and if a shock occurs, the death rate is quite high. This case report is an 8 years old girl with complaints of fever accompanied by abdominal pain, nausea and vomiting and headache. On physical examination, it was found that the patient's general condition appeared to be moderately ill, composmentis consciousness, pulse 86 times/minute, respiratory rate 22 times/minute, temperature 36.5 °c, and the patient's SpO2 was found to be 98%. From the supporting examination, it was found that the tubex value increased by +4. The Dengue results showed Dengue IgG (+) and IgM (-).

Work stress is a common phenomenon in various organizations and significantly impacts employee well-being and productivity. This study aims to understand the dynamics of work stress experienced by employees at the Social Services Department of Klaten, including its causes, effects, and management strategies. A qualitative descriptive method was used, with data collected through interviews and observations of five informants. The results indicate that the primary causes of work stress include ineffective communication, high workloads, limited human resources, and pressure from tight deadlines. The effects of work stress manifest in decreased productivity, physical and mental health issues, and strained social relationships. Employees adopt various coping strategies, such as seeking entertainment, isolating themselves, or relying on social support. The organization has implemented programs like capacity building, but additional policies are needed to enhance employee well-being. This study recommends improving communication, optimizing human resources, and implementing more effective stress management programs to create a healthier and more productive work environment.

Non-Communicable Diseases (NCDs) are a group of diseases that are not transmitted through infection or direct contact with other individuals, but are caused by a combination of genetic, environmental and behavioral factors. NCDs are one of the main causes of death globally, with prevalence rates continuing to increase, especially in developing countries. The main risk factors for NCDs include unhealthy diet, lack of physical activity, tobacco consumption and excessive alcohol use. Prevention and control of NCDs requires a multidisciplinary approach, involving public education, health system strengthening, public policies that support health, as well as early detection and risk management. Effective treatment of NCDs is very important to improve people's quality of life and reduce the economic burden caused by this disease. Prevention of PTM can be done through PTM screening. The government has provided this skinning method through the JKN mobile application. The method used in this activity is direct socialization and discussion directly with participants using power point media. The results showed that participants were very enthusiastic about following the education provided and enthusiastic about knowing how to carry out screening using the JKN application.

Non-Communicable Diseases (NCDs) are a group of diseases that are not transmitted through infection or direct contact with other individuals, but are caused by a combination of genetic, environmental and behavioral factors. NCDs are one of the main causes of death globally, with prevalence rates continuing to increase, especially in developing countries. The main risk factors for NCDs include unhealthy diet, lack of physical activity, tobacco consumption and excessive alcohol use. Prevention and control of NCDs requires a multidisciplinary approach, involving public education, health system strengthening, public policies that support health, as well as early detection and risk management. Effective treatment of NCDs is very important to improve people's quality of life and reduce the economic burden caused by this disease. Prevention of PTM can be done through PTM screening. The government has provided this skinning method through the JKN mobile application. The method used in this activity is direct socialization and discussion directly with participants using power point media. The results showed that participants were very enthusiastic about following the education provided and enthusiastic about knowing how to carry out screening using the JKN application.

A healthy lifestyle is an important foundation in achieving a good quality of life. Physical education in schools plays a significant role in introducing and instilling healthy living habits in children from an early age. In addition, the role of parents as primary educators at home is crucial in supporting and strengthening healthy habits taught in schools. Collaboration between physical education and education from parents can create a conducive environment for children to adopt a healthy lifestyle sustainably. This activity was carried out in Timbuolo Village, Botupingge District, Bone Bolango Regency, and attended by the village head, teachers, principals, and parents. Through this Community Service socialization activity, it is hoped that parents can increase their insight into Health and a healthy lifestyle so that children can develop according to their developmental stages

This research analyzes the physical parameters of the Idanoi River in Sifalaete Village, including color, odor, light penetration, depth, current speed, bottom substrate and vegetation. The results showed a brownish water color due to suspended particles, a muddy smell from organic sediment, and light penetration of 15 cm which indicated a high level of turbidity. The average current speed is 1.7157 seconds, with the wind influence being more dominant at the surface. The basic substrate is stone and gravel, while the vegetation around the river is dominated by grass and banana trees. Environmental factors and human activities influence river conditions, so monitoring and conservation are needed to maintain the ecosystem.

Fish growth refers to the growth of body size which includes length and weight, as well as the development of fish body tissues within a certain period of time.Growth does not only occur in a physical sense but also includes biological and physiological changes in the fish body.In an ecological context, fish growth is related to the ability to survive, adapt, and reproduce in an environment with various internal and external factors.The implementation of the practicum of population dynamics and fish stock assessment was carried out in the Nias University building, room 2 of the Faculty of Science and Technology. The morphometric measurements were carried out by measuring the total length, stag length and standard length.The total length was measured from the distance between the tip of the head end and the tip of the caudal fin back.Growth of strange mackerel through the relationship between length and weight using the growth formula expressed in the form of a linear regression equation. The equation obtained from the analysis of measurement data shows the length-weight relationship with the equation Y 2.8771x-1.7473 and R2 value of 0.6688. The coefficient b value of 1.7473 indicates that mackerel has a negative allometric growth pattern, which means weight gain. Mackerel (Rastrelliger sp.) is the main indicator of fish growth and health based on the results of morphometric studies that show variations in length and weight.

The increasing population triggers a demand for land for housing and other activities. Along with this, issues arise regarding the limited availability of land, especially in rapidly developed areas. This limitation has the potential to create an imbalance between the growing need for space and the existing land capacity. This study evaluates the land carrying capacity in four sub-districts in the southern part of Medan City, namely Medan Tuntungan, Medan Johor, Medan Amplas, and Medan Denai, in dealing with the continuously growing population. Using a spatial analysis approach with ArcGIS 10.8 software and detailed spatial data, this research identifies potential areas for residential development and projects the capacity of land to accommodate future populations. The analysis covers physical and environmental aspects such as land slope, soil type, natural disaster risks, and access to public facilities. The results show that each sub-district has different potentials and challenges. Medan Tuntungan, with its large area and flat land conditions, shows significant potential for residential development, although attention must be given to the existence of protected areas and agricultural land that must be preserved. Medan Johor, as an economic center, faces substantial pressure on land use, with some areas nearing their maximum capacity. Medan Amplas and Medan Denai, which are more urban, experience stricter land limitations. Population growth projections indicate a significant increase in land demand in some sub-districts in the coming decades. Without effective management, this has the potential to exert high pressure on the environment and urban infrastructure. This research emphasizes the importance of spatial planning and sustainable development policies to maintain a balance between housing needs and environmental conservation.

The support of husbands and family members in safe childbirth preparation is crucial for pregnant women. Husbands serve as both emotional and physical companions, providing comfort and security during the birthing process. Challenges encountered in community service partnerships related to spousal and familial support in safe childbirth preparation can encompass several aspects. Firstly, a lack of understanding among husbands and family members regarding the childbirth process can result in minimal emotional and physical support. Many husbands do not participate in prenatal education, leaving them unprepared to provide the necessary support. Secondly, cultural norms that limit the husband's role in childbirth can pose challenges. In some communities, there is still a belief that the husband's role is insignificant in childbirth preparation, leading to decreased participation. This can diminish the pregnant woman's self-confidence and create discomfort. Based on the challenges faced by partners, the proposed solution is the creation of engaging informational media to facilitate the dissemination of information to the public, particularly to husbands and family members, in support of safe childbirth preparation, a program referred to as DuGaLiMan. This initiative was implemented in September 2024 at Babirik Community Health Center, Hulu Sungai Utara Regency, South Kalimantan Province. The DuGaLiMan program, which focuses on spousal and familial support in safe childbirth preparation at Babirik Community Health Center, demonstrates its success in achieving its objectives. The program has successfully increased the knowledge and awareness of husbands and family members regarding the importance of their roles during the childbirth process. With appropriate education, they can provide the necessary emotional and physical support to pregnant women, creating a safer and more comfortable environment.

Tourism development in Aceh Tengah Regency has great potential to become a leading tourist destination, especially with the natural beauty of Danau Laut Tawar and the richness of local culture. The Tourism Office of Aceh Tengah Regency has implemented various strategies, including the empowerment of local communities, infrastructure improvements, and tourism promotion. However, significant challenges remain in the development of this sector, such as the lack of land legality documents, limited supporting facilities, and low creativity in the creative economy products. Based on the research, development focusing on community empowerment through training, improvements in physical and social infrastructure, and strengthening collaboration between the government, private sector, and local communities can enhance tourism appeal and provide positive economic impacts. In the future, community-based and sustainable tourism development will be the key to creating an environmentally friendly and sustainable destination. Through more coordinated strategic efforts, it is expected that the tourism sector in Aceh Tengah can grow rapidly and contribute to regional development.    

Tourism development in Aceh Tengah Regency has great potential to become a leading tourist destination, especially with the natural beauty of Danau Laut Tawar and the richness of local culture. The Tourism Office of Aceh Tengah Regency has implemented various strategies, including the empowerment of local communities, infrastructure improvements, and tourism promotion. However, significant challenges remain in the development of this sector, such as the lack of land legality documents, limited supporting facilities, and low creativity in the creative economy products. Based on the research, development focusing on community empowerment through training, improvements in physical and social infrastructure, and strengthening collaboration between the government, private sector, and local communities can enhance tourism appeal and provide positive economic impacts. In the future, community-based and sustainable tourism development will be the key to creating an environmentally friendly and sustainable destination. Through more coordinated strategic efforts, it is expected that the tourism sector in Aceh Tengah can grow rapidly and contribute to regional development.

Middle adulthood is a critical stage in life characterized by significant transformations in physical, psychological, and social aspects. During this period, individuals often face a decline in certain physical and mental capacities while also having opportunities to achieve greater levels of maturity. Challenges such as health issues, changing social roles, and increasing family responsibilities are commonly encountered. The complexity of fulfilling physical, emotional, and social needs increases, significantly impacting overall well-being. Addressing these needs involves various efforts, including maintaining good health, managing stress, and fostering meaningful social connections. Support from the surrounding environment plays a crucial role in helping individuals meet these needs. Therefore, a deep understanding of the challenges faced during middle adulthood is essential for improving their quality of life. The ability to manage physical and psychological changes while sustaining positive social relationships is key to achieving a balanced and fulfilling life during this phase.

Violation of the teacher's code of ethics is a serious problem that can damage the image of the education profession and endanger the school environment. This study focuses on a case study of a Violation of the Teacher's Code of Ethics by a teacher at MAN who was involved in alleged immoral acts against his female students. The purpose of this study was to explore the causes of the occurrence of the violation of professional ethics. The results of the study showed that factors of abuse of power, lack of supervision, and weak enforcement of the code of ethics contributed to the occurrence of the violation. The impact is very large, both for victims who experience physical and psychological trauma, and for the reputation of the educational institution itself. This study is expected to provide recommendations for improving supervision, ethics education, and stricter law enforcement in the educational environment to prevent similar incidents from happening again.  

This study aims  to describe and reveal data about the diagnosis of student learning difficulties at school and the teacher's efforts to identify the types and characteristics, as well as the factors that cause students to experience difficulties in learning. This research uses a qualitative research approach with a library research approach obtained from books, literature, articles, journals, and sites on the internet that are related to the research conducted. The results of the study show that learning difficulties are defined as obstacles to children in learning who have difficulty learning to read, understanding every learning the child cannot develop and receive the information obtained properly so that it affects the child's learning achievement. Factors that cause students to experience difficulties in learning are 2, namely internal factors which include psycho-physical disorders of students both in cognitive, affective, psychomotor aspects and external factors including family, school and community environments. Efforts made by teachers to overcome students' learning difficulties can make various strategic efforts involving identification, diagnosis, intervention, providing assistance and collaboration. In this effort, it is important for teachers to continuously improve their professional competence, especially in recognizing and dealing with various types of learning difficulties.

The policies decided regarding employee interests have not considered employee aspirations and the lack of adequate coordination of targets and action plans at each level of the organization indicates poor communication between leaders or management and employees at BSI KCP Kuala Meulaboh. Leadership and work environment are benchmarks for determining employee performance in relation to measuring how far the employee's contribution or results are for the company. The purpose of this study was to determine the effect of leadership and work environment on employee performance at BSI KCP Kuala Meulaboh. The location of this study was at the KCP Kuala Meulaboh Office located on Jalan Meulaboh - Jeuram Gampong Simpang Peut, Nagan Raya Regency. The sample in this study was 17 employees of BSI KCP Kuala Meulaboh. The objects of this study were leadership, work environment and employee performance. Based on the results of the study, it shows that partially leadership influences employee performance with a significant value of 0.004 (<0.05) and partially the work environment influences employee performance with a significant value of 0.001 (<0.05). Simultaneously (F test), human relations and physical work environment have a significant effect on the work ethic of BSI KCP Nagan Raya 1 employees, with a significance value of (0.000 <0.05). Therefore, the results of this study state that both independent variables support the hypothesis. While the magnitude of the influence of the two variables (leadership and work environment) on employee performance is 57.2% and the remaining 42.8% is influenced by other variables not included in the research model.