Musculoskeletal disorders (MSDs) affect the muscles, nerves, blood vessels, ligaments and tendons. ... Ergonomics --- fitting a job to a person --- helps lessen muscle fatigue, increases productivity and reduces the number and severity of work-related MSDs.
Rebounded nasal congestion is an effect of excessive use of these products when administered correctly.
Rebound congestion is a persistent nasal obstruction (congestion) brought on by excessive use of nasal sprays, drops, or gels containing decongestant medications. Even in the absence of allergies or other cold-like symptoms, this kind of congestion can develop. There are no additional cold, flu, or allergy symptoms when you have rhinitis medicamentosa, just a runny or stuffy nose. Rebound congestion is another name for hay fever.
Rebound congestion is persistent and won't go away even after you stop using the spray. But rebound congestion isn't your standard nasal congestion. It's not brought on by an upper respiratory infection or allergies. Instead, taking nasal decongestant sprays for longer than three straight days makes the congestion worse.
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Answer:
231 ml
Explanation:
Let x represent the amo unt of Dextrose 70% in ml and y represent the amount of Dextrose 5% in ml needed to prepare 1,000mL of Dextrose 20%.
Since 1000 ml of Dextrose 20% is needed, hence:
x + y = 1000 (1)
Also 70% Dextrose is mixed with 5% dextrose to produce 20% dextrose. i.e.:
70% of x + 5% of y = 20% of 1000
0.7x + 0.05y = 200 (2)
We have to solve equations 1 and 2 simultaneously.
Let us multiply equation 2 by 20:
14x + y = 4000 (3)
subtract equation 1 from 3:
13x = 3000
x = 231 ml
Put x = 231 in equation 1 to find y:
231 + y = 1000
y = 769 ml
Therefore 231 ml of Dextrose 70% must be mixed with 769 ml of Dextrose 5% to prepare 1,000mL of Dextrose 20%? *
