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The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface. The Nearctic realm covers most of North America, including...

A grison (/ˈɡrɪzən/, /ˈɡraɪsən/) is any mustelid in the genus Galictis. Native to Central and South America, the genus contains two extant species: the...

Mineralocorticoids are a class of corticosteroids, which in turn are a class of steroid hormones. Mineralocorticoids are produced in the adrenal cortex...

Integration is the basic operation in integral calculus. While differentiation has straightforward rules by which the derivative of a complicated function...

Google Helpouts was an online collaboration service from Google which launched in November 2013 and allowed users to share their expertise through live...

Alpha (α) motor neurons (also called alpha motoneurons), are large, multipolar lower motor neurons of the brainstem and spinal cord. They innervate extrafusal...

Functional selectivity (or “agonist trafficking”, “biased agonism”, “biased signaling”, "ligand bias" and “differential engagement”) is the ligand-dependent...

A centered tetrahedral number is a centered figurate number that represents a tetrahedron. The centered tetrahedral number for a specific n is given by...

Fathead minnow (Pimephales promelas), also known as fathead or tuffy, is a species of temperate freshwater fish belonging to the genus Pimephales of the...

The Pacific tree frog (Pseudacris regilla), also known as the Pacific chorus frog, has a range spanning the Pacific Northwest, from Northern California...

A nomogram (from Greek nomos νόμος, "law" and grammē γραμμή, "line"), also called a nomograph, alignment chart, or abac, is a graphical calculating device...

Netscape 7 is a discontinued Internet suite developed by Netscape Communications Corporation, and was the seventh major release of the Netscape series...

Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2 M {\displaystyle...

Desorption is the physical process where adsorbed atoms or molecules are released from a surface into the surrounding vacuum or fluid. This occurs when...

The R.80 was a British rigid airship, first flown on 19 July 1920, and was the first fully streamlined airship to be built in Britain. Originally a military...

Cardamine is a large genus of flowering plants in the mustard family, Brassicaceae, known as bittercresses and toothworts. It contains more than 200 species...

Nollaig Ó Muraíle is an Irish scholar. He published an acclaimed edition of Dubhaltach Mac Fhirbhisigh's Leabhar na nGenealach in 2004. He was admitted...

The BYU College of Nursing is one of the 16 colleges that make up Brigham Young University. It currently has more than 400 students. It began as the BYU...

An aptychus is a type of marine fossil. It is a hard anatomical structure, a sort of curved shelly plate, now understood to be part of the body of an ammonite...

The New Mexico whiptail (Aspidoscelis neomexicanus) is a female-only species of lizard found in New Mexico and Arizona in the southwestern United States...