A standard contains a known amount of a substance. If u are performing an experiment you will use a sample with a known concentration to create a standard curve (a straight line). Positive and negative controls are measured against the standard curve to show the expected results if the sample u will be testing is positive or negative.
Concentration of immature blood vessels causes salmon patches on the nape of the neck and on the eyelids of a newborn.
Bruising would appear more bluish-purple rather than like salmon patchwork. The Harlequin sign, which is frequently observed in neonates with low birth weight, is the result of immature autoregulation of blood flow. A salmon-colored response would not be an allergic reaction; it would be more widespread.
<h3>What are common childhood rashes?</h3>
Erythema toxicum, which can arise between two days and two weeks after delivery, is a common skin response in infants. Flat, red spots or tiny pimples frequently start on the face before spreading to the torso and limbs. The rash will go away within a few days to a week, is not infectious, and is harmless.
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Answer: option d= 130 - 150.
Explanation:
From the question, we are given that the man's age= 50, the man weighs= 193 lb (87.5 kg) and the 50 years old man's resting heart rate= 70 beats · min-1. Then, I am asked to calculate the man's target heart rate (THR) zone for 60% to 80%.
Using the Karvonen (HRR) method to calculate the fifty(50) years old man's target heart rate (THR) zone for 60% to 80%, we will need the man's age for this Calculation and the man's resting heart rate (HR).
Important information to note that is not given from the question is that the 50 years old man's estimated maximum heart rate is (220 - 50) = 170.
Step one: Using the formula; maximum heart rate - man's age × zone Percent. --------------------------(1).
Step two: equation (1) + resting heart rate (HR). -------------------------(2).
For the 60 percent = 0.6.
==>( 170 - 70) × .6 = 60.
Then, 60 + 70 = 130.
For the 80 percent= 0.8;
==> (170 - 70) × .8 = 80.
Then, 80 + 70 = 150.
Answer:
true
Explanation:
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