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Pyramidal

pyramidal

1. Of or pertaining to a pyramid; in the form of a a pyramid; pyramidical; as, pyramidal cleavage. The mystic obelisks stand up triangular, pyramidal. (Mrs. Browning)

2. (Science: chemistry) same as tetragonal.

(Science: mathematics) Pyramidal numbers, certain series of figurate numbers expressing the number of balls or points that may be arranged in the form of pyramids. Thus 1, 4, 10, 20, 35, etc, are trangular pyramidal numbers; and 1, 5, 14, 30, 55, etc, are square pyramidal numbers.

Origin: Cf. F. Pyramidal.

(Science: anatomy) One of the carpal bones. See cuneiform, 2 .


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Re: Theories - Origin of Life

... them ever being neatly piled in a pyramid again are infinitessimal. Notice I said randomly. If, however, you decide you want them to be in a neat pyramidal pile and start restacking them you do not violate the second law (obviously it's possible I've seen it done) when you succeed in stacking ...

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by BDDVM
Fri Mar 18, 2011 1:45 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 888643

The Fiber Disease

... of Si and 2 layers of SiO2. The failure starts at the corners and progresses, with increasing load, to the scalloped feature, and finally to the pyramidal failure made up of material fracture and delamination. The failure evolution for a 2 micron tall pad at the same loading rates shows that ...

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by Nadas Moksha
Fri Dec 15, 2006 8:00 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5410955

The Fiber Disease

... Epoxidierung kombiniert mit NADH-Regenerierung in organisch-wässrigen Emulsionen. A Monomeric Organolithium Compound Containing a Free Pyramidal Carbanion in Solution and in the Solid State . Silver Complexes as Carriers for Facilitated-Transport Composite Membranes A Fluorescent Pyrophosphate ...

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by Nadas Moksha
Tue Aug 22, 2006 9:14 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5410955

Strokes

The left hemisphere controlls the right side of the body, while the right hemisphere contolls the left side of the body. That's because the pyramidal ways (that control voluntary conscious movements) are crossing in the medula oblongata (the lower part of the brain stem) so fibers from the left ...

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by xand_3r
Wed Jul 19, 2006 11:34 am
 
Forum: Physiology
Topic: Strokes
Replies: 1
Views: 2476

The Fiber Disease

... particular was located in Canada. Here's more.... CJD presents as a subacute dementia, evolving over weeks to several months and is accompanied by pyramidal, extrapyramidal, and cerebellar signs. The mean age of death is 57 years but the disease may occur in the late teens and early twenties. At ...

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by elmoscubas
Mon Dec 19, 2005 1:59 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5410955


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