| periodic limb movement disorder |
Also known as nocturnal myoclonus. Characterized by periodic episodes of repetitive jerking and kicking during sleep. The movements are often associated with a partial arousal or awakening; however, the person is usually unaware of the limb movements or frequent sleep disruption.
출처: www.womenshealthmatters.ca/centres/environmental/c...
|
|---|---|
| periodic table |
The periodic table is a chart of all the known elements in order of increasing atomic number. The table puts elements into groups with similar characteristics, allowing us to recognize trends over the whole array of elements.
출처: www.biologylessons.sdsu.edu/classes/lab2/glossary....
|
| periodontist |
a specialist who treats the gums and supporting structures of the teeth
출처: www.egyptdentists.com/cgi-bin/gforum/gforum.cgi
|
| periodic table |
Early alchemists understood that certain elements could be grouped together due to the properties that they had. But it was not until the 18th century that Lavoisier tried to classify the known elements. It took another 100 years and a lot of trial and error for Mendeleev to propose a real foundation for the modern periodic table. He arranged the elements in a table according to relative atomic mass and left gaps where an element did not match. ...
출처: www.ch.ic.ac.uk/vchemlib/mol/glossary/
|
| period |
The time needed for an orbiting body to complete one revolution about another body.
출처: astronomy.nju.edu.cn/astron/AT3/GLOSS_P.HTM
|