[Midterm Q11 A, B, C, D, E]  A nickel-titanium alloy is used to make components for jet turbine aircraft engines. Cracking is a potentially serious problem in the final part, as it can lead to losing an engine in flight. A test is run at the parts producer to determine the effects of three factors on cracks. The three factors are pouring temperature (A), titanium content (B), heat treatment method (C).  Three replicates of a 23 design are run, and the length of crack (in μm) induced in a sample coupon subjected to a standard test is measured. The data are in the attached file Midterm11a.dxpx a.Estimate the factor effects. Which effects are large? b.Use the analysis of variance to confirm your conclusions for part (a). c.Write down a regression model for predicting length of cracks based on the results of this experiment.  You may cut & paste from DX. d.Analyze the residuals. Are there any obvious problems? e.Based on the analysis of main effects and interaction plots, what levels of A, B, and C would you recommend using, assuming small cracks are best?  

Which of the following is generally not considered a barrier to entry?

[Midterm Q10 B, C] An article in Bioelectromagnetics (“Electromagnetic Effects on Forearm Disuse) describes a randomized, double-blind, placebo-controlled study to determine if a common pulsing electromagnetic field (PEMF) treatment could reduce bone loss after forearm disuse due to injury. Eighty injured subjects immobilized with a cast were randomly placed into four groups. A placebo or PEMF transmitter was worn on the injured forearm for 1, 2, or 4 hours per day for 8 weeks. The data below are the percent loss in forearm bone density (BD) after each patient’s treatment – with instructor modifications. Midterm Q10.png a. Suppose that the orthopedic surgeons consider 2.5% loss of bone density significant and historical data yields a bone loss standard deviation of roughly 1.5% in patients of this type.  Using these two numbers, comment on the use of 20 replicates per group: too big or too small? Use Design Expert.  Respond here with your answer and reason for it.   b. If you were seeking 95% power to detect the numbers mentioned in part a of this problem (2.5% / 1.5%), rebuild your Question 10 design and report the required number of replicates. Respond here with a number: “_________ replicates would be enough for approximately 95% power.”

Match each cancer treatment with its correct description.

The nurse is assisting the physician during a thoracentesis for a patient with a right-sided pleural effusion. The patient reports feeling most comfortable in a tripod position.Which position should the nurse place the patient in to best support the procedure?

A patient diagnosed with pneumonia is prescribed vancomycin for treatment. The order is for vancomycin 1 g IV to be infused over 1 hour every 12 hours. Vancomycin is available in a concentration of 5 mg per mL of IV solution. vanco 5 per ml.jpg  At what rate (in mL/hour) should the nurse set the infusion pump for the vancomycin? ANSWER: __________ mL/hr Do not add label. Round to whole number.

A nurse is caring for a patient with severe chronic obstructive pulmonary disease (COPD) who is receiving inhaled beta-agonists, corticosteroids, and supplemental oxygen therapy.Which class of medication is contraindicated for this patient due to its potential to worsen respiratory status?

The nurse is caring for a patient diagnosed with chronic obstructive pulmonary disease (COPD). What arterial blood gas (ABG) results would be expected in a patient with COPD? Select THREE (3) options from the list below.

Michael, a postoperative patient with a history of chronic obstructive pulmonary disorder (COPD), is receiving oxygen at 2 L/minute via nasal cannula. The patient’s spouse uses the call light to notify the nurse that MIchael “is not breathing well”. The spouse asks the nurse to increase the oxygen intake to help the patient breathe easier. Which response by the nurse is MOST appropriate?

The nurse is assessing a 79 year old client diagnosed with pneumonia. Which signs and symptoms should the nurse expect to assess in the client?