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A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling. It is used in conjunction with a levelling staff to establish the relative height or levels (the vertical separation) of objects or marks. It is widely used in surveying and construction to measure height differences ...
In the U.S., the numbers are measured by milligrams (mg) and deciliters (dL). The lab looks at how many milligrams of cholesterol are in 1 deciliter of blood, and they come up with a number of mg ...
Chart of the symptoms of blood alcohol levels. The symptoms of impairment can start as soon as you have a drink and may become worse the faster you drink. BAC level. Standard effects. 0.02 ...
Hyperlexia is characterized by high-level reading skills, but other communication delays may be present at the same time. Learn about the signs, diagnosis, and treatment of hyperlexia.
Hypoxemia is when you have low levels of oxygen in your blood. When this happens, the organs and tissues in your body don’t get enough oxygen to function properly. Hypoxemia is often the result ...
Hot weather and high altitudes. Being in the heat or in humid weather can cause you to sweat and increase the need for more fluid, and being at a high altitude can cause you to be dehydrated ...
Pulse oximetry, or pulse ox, is a quick, inexpensive, and needle-free test that measures the amount of oxygen in your blood. It shows whether your heart and lungs supply enough oxygen to meet your ...
e. The Lexile Framework for Reading is an educational tool that uses a measure called a Lexile to match readers with books, articles and other leveled reading resources. Readers and books are assigned a score on the Lexile scale, in which lower scores reflect easier readability for books and lower reading ability for readers.