Consider the flow of air through a convergent-divergent duct, such as the tube described in Prob. 4.4. The inlet, throat, and exit areas are 3, 1.5, and 2m2, respectively. The inlet and exit pressures are 1.02 x 105 and 1.00 x N/m2, respectively. Calculate the flow velocity at the throat. Assume incompressible flow with standard sea-level density. Prob. 4.4. An instrument used to ii.Ce the airspeed on many early low-speed airplanes, principally during 1919 to 1930, was the tube. This simple device is a convergent-divergent duct. (The front section’s cross-sectional area A decreases in the flow direction, and the back section’s cross-sectional area increases in the flow direction. Somewhere between the inlet and exit of the duct, there is a minimum area called the throat.) See figure below. Let A1 andA2 denote the inlet and throat areas, respectively. Let p1 and p2 be the pressures at the inlet and throat, respectively. The tube is mounted at a specific location on the airplane (generally on the wing or near the front of the fuselage) where the inlet velocity V1 is essentially the same as the free-stream velocity- that is, the velocity of the airplane through the air. With a knowledge of the area ratio A:z/A1 (a fixed design feature) and a measurement of the pressure difference p1 – P2• we can determine the airplane’s velocity. For example, assume If the airplane is flying at standard sea level, what is its velocity?

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  Opiddiction Goes Global Overview

As many states enact loid Aaws that set time or dosage limits on prescription or dispensation of controlled substances including opioids, the demand for legally sold opioids is declining slightly in the United States (CDC, n.d.). The illegal market, however, is booming. 

After legal actions were taken against the tobacco industry in the United States, the industry responded by increasing international marketing efforts. “Big Pharma” is now doing the same (Ryan, Girion, & Glover, 2016).

It is estimated that between 5 and 8 billion people outside the United States do not have access to pain medications, which represents an enormous growth opportunity for companies like Purdue, producer and distributor of oxycodone. Remember: when Purdue introduced oxycodone in the United States, they claimed it was nonaddictive. Discussion Post

Using the materials in this unit, some of which are linked in Resources, complete the following: Provide three examples that argue in favor of making drugs like oxycodone more available to people in severe pain globally.   Present three examples that argue for tighter international regulations on the marketing and sales of these drugs.  Use APA style and formatting to cite your research. Response Guidelines

Please choose posts that have had few responses thus far. Respond with all of the following: Engage your peer. Tell him or her specifically why you chose to respond to the post. Seek clarification. Talk about what is unclear. Ask questions. Offer suggestions. Include personal examples or work experiences that add perspective to your reply. Be a practitioner/scholar. In addition to your personal or work experience, include one academic reference in your response. Use APA style and formatting appropriate to the type of reference you provide.

Refer to the Faculty Expectations for Response Guidelines. References

Centers for Disease Control and Prevention. (n.d.). Prescription drugs. Retrieved from https://www.cdc.gov/phlp/publications/topic/prescription.html

Ryan, H., Girion, L., & Glover, S. (2016, Dec. 18). OxyContin goes global —“We’re only just getting started” [Blog post]. Retrieved from http://www.latimes.com/projects/la-me-oxycontin-part3/ Resources Discussion Participation Scoring Guide. Understanding the Epidemic. OxyContin Goes Global. APA Module. Prescription Drugs. Capella University Library.

 

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