• 2 Pages HW 1
    HW 1

    School: UNC

    Course: Health Effects Of Environmental Agents

    HW 1 1. Treated wastewater is often discharged to nearby natural waters 2. Biological oxygen demand (BOD) 3. Chemicals (nitrogen, phosphorus) 4. Synthetic Chemicals 5. Antibiotics 6. Microbial Pathogens 7. Metals 8. Influenced by many factors: a. Types an

  • 5 Pages Practice FInal Exam
    Practice FInal Exam

    School: UNC

    Course: Health Effects Of Environmental Agents

    Practice Final Exam Question 1. (20 points) You must answer this question. Consider two particles. One is 0.02 m in diameter; the other is 20 m in diameter. Assume spherical shape, 20oC and 1 atmosphere pressure. Unless otherwise stated, assume the partic

  • 3 Pages Practice Exam 3
    Practice Exam 3

    School: UNC

    Course: Health Effects Of Environmental Agents

    Practice Exam 3 1. (2 pts each; 20 pts total) Identify each statement as true or false. Assume particles are unit density spheres. A. At the same temperature, aerosol particles generally move faster than gas molecules. B. A 100-m water drop weighs 8 times

  • 4 Pages Practice Exam 1
    Practice Exam 1

    School: UNC

    Course: Health Effects Of Environmental Agents

    Practice Exam 1 1. (30 points total) The data below were obtained using a cascade impactor Stage cut size, m mass collected, mg 1 10 1 2 4 19 3 2 50 4 1 25 filter 5 a. (10 points) Plot a cumulative distribution for these data using the logprobability pape

  • 2 Pages Lecture Notes 4
    Lecture Notes 4

    School: UNC

    Course: Health Effects Of Environmental Agents

    Lecture Notes 4 Biochemical changes in host cell Ion leakage, fluid leakage Cholera toxin, targets intestinal epithelia Lytic pores, S. aureus -toxin Disruption/destruction of membrane Inhibition of protein synthesis Inhibition of nerve function Diphther

  • 3 Pages Lecture Notes 3
    Lecture Notes 3

    School: UNC

    Course: Health Effects Of Environmental Agents

    Lecture Notes 3 Biohazard Detection System (BDS) Sampling interval 1.5 hrs, 30 min analysis Currently only set-up for B. anthracis spores Combined automated air sampling w/internal automated testing system Used across the US in USPS PDC BioWatch Program A

  • 3 Pages Lecture Notes 2
    Lecture Notes 2

    School: UNC

    Course: Health Effects Of Environmental Agents

    Lecture Notes 2 Survival and persistence of soil microbes Some things to consider Soil type Texture: sand>silt>clay Moisture content: below 10% is biocidal Adsorption to soil (esp. viruses) Migration of microbes thru soil layers Type and species of micro

  • 3 Pages Lecture Notes 1
    Lecture Notes 1

    School: UNC

    Course: Health Effects Of Environmental Agents

    Lecture Notes 1 Microbial Indicators of Fecal Contamination and Treatment Efficacy for Enteric Protozoan Pathogens Clostridium perfringens spores may be useful indicators of enteric protozoan parasites Plentiful in feces, raw sewage, treated effluents and

  • 2 Pages HW 2
    HW 2

    School: UNC

    Course: Health Effects Of Environmental Agents

    HW 2 1. Treatment of the settled solids from 1o and 2o sewage treatment 2. Biological digestion to biologically stabilize the sludge solids a. Anaerobic digestion (anaerobic biodegradation) b. Aerobic digestion (aerobic biodegradation) c. Mesophilic diges

  • 2 Pages Practice Midterm Exam
    Practice Midterm Exam

    School: UNC

    Course: Health Effects Of Environmental Agents

    Practice Midterm Exam 1. Initially, a polydisperse aerosol is spread uniformly throughout a chamber that is 100 cm tall. The air within the chamber is calm. a. (15 points) Assume for the moment that Stokess Law applies. Develop an equation to describe the

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