Explain why HBV poses more of a problem for safety personnel than HIV does
What will be an ideal response?
The Hepatitis B virus is extremely strong as compared with HIV. For example, it can live on surfaces for up to a week if it is exposed to air. Hepatitis B is also much more concentrated than HIV. Hepatitis B is caused by a double-shelled virus (HBV). It can be transmitted in the workplace in the following ways:
• Contact with blood
• Contact with bodily fluids including tears, saliva, and semen
The Hepatitis B virus can live in bodily fluids for years. Carriers of the virus are at risk themselves, and they place others at risk. Persons infected with HBV may contract chronic hepatitis, cirrhosis of the liver, and/or primary heptocellular carcinoma. An HBV-infected individual is more than 300 times more likely to develop primary liver cancer than is a noninfected individual from the same environment. Unfortunately, it is possible to be infected and not know it because the symptoms can vary so widely from person to person.
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14. Why do most solid-state DC motor controls use some method to limit the current to a safe value?
What will be an ideal response?
Argon, which has a constant specific heat as a noble gas, has a specific heat ratio of 1.667 and an ideal gas constant of 0.2081 kJ/kg-K. Determine the values of cp and cv for argon.
Given: k = cp/cv = 1.667; R = 0.2081 kJ/kg-K What will be an ideal response?
Which of the following is not listed as an element that goes into a scenario (i.e. from Figure 8.6)?
A. Key issues and questions B. Driving forces C. Logics D. Learning
Just how much resistance a conductor has depends on four factors, namely the type of material from which it is made, the conductor’s length, its cross-sectional area (thickness), and its ____.
a. height b. density c. temperature d. mass