When naphthalene gas is inhaled, the body breaks it down into other chemicals that react with cells in the body and damage tissues. How naphthalene kills moths is not understood. The odor is thought to be unpleasant enough to drive animals away in repellent products.aphthalene is made from crude oil or coal tar. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires. It is used as an insecticide and pest repellent.
Grip strength can be measured quantitatively using a hand dynamometer. However, the methods used to characterise grip strength varies considerably, for example with regard to the choice of dynamometer or the measurement protocol used. This has the potential to introduce measurement error.
EMG and Muscle Fatigue Human Physiology with Vernier 18 - 3 9. Record statistical information about the grip strength data. a. Position the cursor at 0 s on the Grip Strength graph (the top graph). Click and drag to highlight 0â20 s on the graph.Click the Statistics button, .omputer 18 18 - 6 Human Physiology with Vernier 2. Use the data in Table 1 to calculate the percent change in amplitude (âmV) in electrical activity that occurs between the 0â20 s and 60â80 s intervals. Do the same for grip strength.