Biological Oxygen Demand (BOD), Total Suspended Solid (TSS), and Dissolved Oxygen (DO) are indicators of water quality in water bodies. Non-polluted water has low BOD and TSS levels and high DO. Changes in these three parameters indicate a change in quality. This study aims to look at variations in the levels of BOD, TSS, and DO spatially and temporarily in Batang Arau River, Padang City in 2018. The study was conducted by observing three stations, namely in the upstream, middle, and downstream, and in the morning and evening. The results showed that BOD and TSS levels tended to increase from upstream to downstream, while DO was the opposite. The temporal variation shows that BOD and TSS levels are low in the morning and increase during the day and evening, while DO is the opposite.

Low Back Pain (LBP) is pain in the waist or lower spine that can be felt up to the buttocks and thighs. Many workers experience illness. Results The study was conducted on 9,482 workers in 12 regencies and cities in Indonesia, the disease experienced by workers was Musculoskeletal Disorder as much as 16% including Low Back Pain. This study aims to determine the relationship between work duration and work posture with complaints of Low Back Pain at Nagari Simpang Kapuak tailors, Lima Puluh Kota Regency. This research is quantitative with a cross sectional approach. Collecting data through a census of 43 tailors with interviews and questionnaires. Data analysis with univariate, bivariate and Chi-Square statistical test. The results of the study found that 58.1% of tailors experienced severe complaints of low back pain. 72.1% are classified as risky age, 74.1% are female, 58.1% have a BMI at risk, 67.4% work with risky work duration, 69.8% work with risky work postures. There is a relationship between age (p = 0.017), BMI (p = 0.013), work duration (p = 0.002), and body posture (p = 0.006) with complaints of Low Back Pain. To reduce the risk of Low Back Pain, tailors should relax and rest by stretching muscles, exercising based on the age of the worker, consuming foods that contain calcium, working with a balanced working time and doing an ergonomic work system.

Car painting work is one of the jobs that are at great risk of impaired lung function. Paint particles consist of hazardous chemicals such as cadmium, chromium, plumbum, mercury, acrylic resin, isocyanate, and toluene solvents. These materials when proven to enter the respiratory tract can cause lung function disorders. The purpose of this study is to identify hazards, analyze dose-response, analyze exposure and analyze the risk characterization of pollutants. This research is descriptive by analyzing environmental health risks to pollutants around the work environment. The population is all sanding, picking, and painting workers totaling 21 people which become sample. The instruments used in this study were low volume air sampler (LVAS), thermo hygrometers, anemometers, scales, and checklists for observing activity patterns. Data analysis uses stages in environmental risk analysis. Respondents smoke at work as much as 47.6%, and do not use APD 71.4%. Pollutants that exceed the quality standard are dust (0.1538 μg / m3), and Cd (0.0025 μg / m3). RQ value (life time) > 1 for all exposure materials, which means that agent risk is not safe after 30 years of work. Management needs to manage risks such as reducing concentration, exposure time, and frequency of exposure to safe limits by managing risk through a technological approach, socioeconomic approach, and an institutional approach.

Introduction: The age group that is susceptible to disease and must get balanced nutrition to avoid stunting is the age group of infants under five years old (toddlers). Toddlers with stunting are caused by many factors, including parenting patterns, health services that can be reached by toddlers, environmental conditions where toddlers live, food consumption as food security for toddlers. The purpose of this research was to know the determinants of stunting in The West Pasaman Regency. Methods: The design of this study was a cross-sectional survey by interviewing 1,156 respondents in West Pasaman Regency which were selected using a simple randomized method. A structured questionnaire that has passed validity and reliability tests was used to collect data. Generalized Structural Equation Modeling was used to determine these determinants. Results and Discussion: The study showed that 30.8% of children under five years old in West Pasaman were stunted with the disease being diarrhea, which was 18.8%. Most of the children under five live in families with a low socioeconomic level, namely 53.9%, with a low education of 58.2%. The results of the re-specification of the model show that the variable that has the greatest indirect influence on the incidence of stunting is the diet variable (path coefficient = 0.90) compared to parenting and environment. Conclusion: Infectious diseases are a direct cause of stunting in toddlers. Parenting behavior factors, eating behavior factors, and environmental factors are indirect causes, but these factors play a very important role in causing stunting in toddlers. Preventive activities are needed, such as counseling for child growth and development, formation of caring for neighbors, a social gathering for nutritious food and pre-marital counseling which discusses parenting, eating patterns, and a sanitary environment

Biological Oxygen Demand (BOD), Total Suspended Solid (TSS) and Dissolved Oxygen (DO) are indicators of water quality in water bodies. Non-polluted water has low BOD and TSS levels and high DO. Changes in these three parameters indicate a change in quality. This study aims to look at variations in the levels of BOD, TSS and DO spatially and temporarily in Batang Arau River, Padang City in 2018. The study was conducted by observing three stations, namely in the upstream, middle and downstream and in the morning and evening. The results showed that BOD and TSS levels tended to increase from upstream to downstream, while DO was the opposite. Temporar variation shows that BOD and TSS levels are low in the morning and increase during the day and evening, while DO is the opposite. Key word: Biological Oxygen Deman, Total Suspended Solid, Dissolved Oxygen Abstrak Kbutuhan Oksigen Biologis (BOD), Total Suspended Solid (TSS) dan Dissolved Oxygen (DO) adalah indikator kualitas air dalam badan air. Air yang tidak tercemar memiliki kadar BOD dan TSS yang rendah serta DO yang tinggi. Perubahan dalam ketiga parameter ini menunjukkan perubahan kualitas. Penelitian ini bertujuan untuk melihat variasi kadar BOD, TSS dan DO secara spasial dan temporer di Sungai Batang Arau, Kota Padang pada tahun 2018. Penelitian ini dilakukan dengan mengamati tiga stasiun, yaitu di hulu, tengah dan hilir dan pada pagi hari, dan malam. Hasil penelitian menunjukkan bahwa tingkat BOD dan TSS cenderung meningkat dari hulu ke hilir, sedangkan DO adalah sebaliknya. Variasi temporer menunjukkan bahwa tingkat BOD dan TSS rendah di pagi hari dan meningkat pada siang dan malam hari, sedangkan DO adalah sebaliknya.