List of craters on Mars: H-N

This is a list of craters on Mars. There are hundreds of thousands of impact crater on Mars, but only some of them have names. This list here only contains named Martian craters starting with the letter H – N (see also lists for A – G and O – Z).

Large Martian craters (greater than 60 km in diameter) are named after famous scientists and science fiction authors; smaller ones (less than 60 km in diameter) get their names from towns on Earth. Craters cannot be named for living people, and small crater names are not intended to be commemorative - that is, a small crater isn't actually named after a specific town on Earth, but rather its name comes at random from a pool of terrestrial place names, with some exceptions made for craters near landing sites. Latitude and longitude are given as planetographic coordinates with west longitude.

H

I

J

K

L

M

N

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References

External links

Noma (disease)

Noma (also referred to as cancrum oris, fusospirochetal gangrene, necrotizing ulcerative stomatitis, stomatitis gangrenosa) is a rapidly progressive, polymicrobial, often gangrenous infection of the mouth or genitals.

Causes

Fusobacterium necrophorum and Prevotella intermedia are thought to be key players in the process and interact with one or more other bacterial organisms (such as Borrelia vincentii, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Staphylococcus aureus, and nonhemolytic Streptococcus spp).

The reported predisposing factors include:

Presentation

The mucous membranes of the mouth develop ulcers, and rapid, painless tissue degeneration ensues, which can degrade tissues of the bones in the face.

In a condition sometimes called noma pudendi, noma can also cause tissue damage to the genitals.

Addition

Addition (often signified by the plus symbol "+") is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total amount of those quantities combined. For example, in the picture on the right, there is a combination of three apples and two apples together; making a total of 5 apples. This observation is equivalent to the mathematical expression "3 + 2 = 5" i.e., "3 add 2 is equal to 5".

Besides counting fruits, addition can also represent combining other physical objects. Using systematic generalizations, addition can also be defined on more abstract quantities, such as integers, rational numbers, real numbers and complex numbers and other abstract objects such as vectors and matrices.

In arithmetic, rules for addition involving fractions and negative numbers have been devised amongst others. In algebra, addition is studied more abstractly.

Addition has several important properties. It is commutative, meaning that order does not matter, and it is associative, meaning that when one adds more than two numbers, the order in which addition is performed does not matter (see Summation). Repeated addition of 1 is the same as counting; addition of 0 does not change a number. Addition also obeys predictable rules concerning related operations such as subtraction and multiplication.

ADD (disambiguation)

ADD is a common abbreviation for attention deficit disorder.

Add or ADD may also refer to:

Entertainment

Science and technology

Transport

Other

See also

Add-2

Andre DiJuan Daniels (born March 31, 1986), better known by his stage name Add-2, sometimes stylized as Add 2, is an American rapper from Chicago, Illinois. He first gained popularity after the release of his second mixtape, A Tale of Two's City: Volume 2. In 2009, his single "Luxury" was featured on MTV,MtvU's top 5 freshman and Vh1 respectively. "Luxury" is part of Add-2's third mixtape, "Tale of Two's City Vol. 3: The Rise & Fall." Add-2 has also worked with Grammy award winning music producer 9th Wonder along with Kendrick Lamar,The Roots and Gerald Walker.

Discography

Guest Appearances