There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.

Click to see a step-by-step slideshow. STEP 1: Write the question and circle the key information. Draw a bar and split it into 12 equal segments: the denominator of the fraction. Label the end '/12'.

CIPAV, Inabonos-Roullier Group, Poligono Arazuri-Orcoyen, 31160 Orcoyen, Navarra, Spain, and Materials and Surface Science Group, Faculty of Sciences, University of Windsor, Windsor, Ontario, Canada ...

BACKGROUND As the definitional formula for population attributable fraction is not usually directly usable in applications, separate estimation formulas are required. However, most epidemiology ...

Wall panelling ideas are by no means a novelty to the interior design space, having been around since the 16th century. But wall panelling has seen a surge in popularity in the past few years, ...

Contributed by Stephen W. Pacala, March 22, 2018 (sent for review February 12, 2014; reviewed by Graham D. Farquhar and Lawren Sack) Leaf traits, such as photosynthetic capacity, nitrogen ...