Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Helix (disambiguation)


Related Topics

In the News (Tue 20 Aug 19)

  
  Helix - Wikipedia, the free encyclopedia
Helixes are important in biology, as DNA is helical and many proteins have helical substructures, known as alpha helices.
A double helix typically consists geometrically of two congruent helixes with the same axis, differing by a translation along the axis, which may or may not be half-way.
A conic helix may be defined as a spiral on a conic surface, with the distance to the apex an exponential function of the angle indicating direction from the axis.
en.wikipedia.org /wiki/Helix   (429 words)

  
 DNA - Encyclopedia, History, Geography and Biography
DNA is a long polymer of nucleotides and encodes the sequence of the amino acid residues in proteins using the genetic code, a triplet code of nucleotides.
The DNA helix can assume one of three slightly different geometries, of which the "B" form described by James D. Watson and Francis Crick is believed to predominate in cells.
In a vertically oriented double helix, the 3' strand is said to be ascending while the 5' strand is said to be descending.
www.arikah.net /encyclopedia/DNA   (6071 words)

  
 Helix (disambiguation) - Wikipedia, the free encyclopedia
The Helix was an underground newspaper in Seattle.
Helix is also the NATO reporting name of the Kamov Ka-27 helicopter.
This is a disambiguation page: a list of articles associated with the same title.
en.wikipedia.org /wiki/Helix_(disambiguation)   (110 words)

  
 Helix
A helix (plural: helices) is a twisted shape like a spring, screw or a spiral staircase.
Helices are important in biology, as DNA is helical and many proteins have helical substructures, known as alpha helices.
In cylindrical coordinates (r, θ, h), the same helix is described by:\n: r = 1\n: θ = h Except for rotations, translationss, and changes of scale, all right-handed helices are equivalent to the helix defined above.
encyclopedia.codeboy.net /wikipedia/h/he/helix.html   (312 words)

  
 Helix: Encyclopedia topic   (Site not responding. Last check: 2007-11-03)
A helix (pl: helices), from the Greek (Greek: A native or inhabitant of Greece) word έλικας/έλιξ, is a twisted shape like a spring, screw (screw: A fastener with a tapered threaded shank and a slotted head) or a spiral (spiral: Flying downward in a helical path with a large radius) staircase.
In mathematics (mathematics: A science (or group of related sciences) dealing with the logic of quantity and shape and arrangement), a helix is a curve (curve: The trace of a point whose direction of motion changes) in 3-dimensional space.
[follow hyperlink for more...]) is often modeled with helixes or double helixes, most often extending out of a circle such as the circle of fifths (circle of fifths: in music theory, the circle of fifths is a model of pitch space and is the series...
www.absoluteastronomy.com /reference/helix   (572 words)

  
 Helix   (Site not responding. Last check: 2007-11-03)
A helix''' (pl: '''helices), from the Greek languageGreek word ''έλικας/έλιξ'', is a twisted shape like a spring, screw or a spiral staircase.
In mathematics, a helix is a Differential geometry of curvescurve in 3-dimensional space.
Helix BioPharma Corp. today announced that it has received a milestone payment of USD$125,000 from Lumera Corporation under the terms of the license agreement signed between the parties approximately one year ago.
www.infothis.com /find/Helix   (776 words)

  
 Helix (disambiguation) - TheBestLinks.com - Apple Macintosh, Canada, Database management system, Hungary, ...   (Site not responding. Last check: 2007-11-03)
Helix (disambiguation), Apple Macintosh, Canada, Database management system...
Helix is also the name of a Canadian heavy-metal band.
This is a disambiguation page, i.e., a navigational aid which lists other pages that might otherwise share the same title.
www.thebestlinks.com /Helix___28__disambiguation__29__.html   (143 words)

  
 [No title]   (Site not responding. Last check: 2007-11-03)
In a DNA double helix, two polynucleotide strands come together through complementary pairing of the bases, which occurs by hydrogenbonding.
Thus the entire nucleotide sequence of each strand is complementary to that of the other, and when separated, each may act asa template with which to replicate the other (middle and lower half of theillustration at the right).
In a vertically oriented double helix, the 3'strand is said to be ascending while the 5' strand is said to be descending.
immune-system-help.com /strand/one/dna.html   (2720 words)

  
 DNA - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-03)
Each vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar, a phosphate and one of four kinds of aromatic "bases".
In a DNA double helix, two polynucleotide strands come together through complementary pairing of the bases, which occurs by hydrogen bonding.
Thus the entire nucleotide sequence of each strand is complementary to that of the other, and when separated, each may act as a template with which to replicate the other (middle and lower half of the illustration at the right).
www.peacelink.de /keyword/DNA.php   (2710 words)

  
 Helix explained   (Site not responding. Last check: 2007-11-03)
See Helix (disambiguation) for other meanings.'' A helix (pl: helices), from the Greek word έλικας/έλιξ, is a twisted shape like a spring, screw or a spiral staircase.
The following three equations in rectangular coordinates define a helix: : x = cos t : y = sin t : z = t Here t is a real parameter.
In cylindrical coordinates (''r'', θ, h), the same helix is described by: : r = 1 : θ = h Except for rotations, translations, and changes of scale, all right-handed helices are equivalent to the helix defined above.
www.wordspider.net /he/helix.html   (676 words)

  
 YourArt.com >> Encyclopedia >> ko:DNA   (Site not responding. Last check: 2007-11-03)
Each vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar (deoxyribose), a phosphate and one of five kinds of nucleobases ("bases").
At the same time, the DNA found in many cells can be macroscopic in length -- approximately 2 meters long for strands in a human chromosome.
Segments of DNA that cells have methylated for regulatory purposes may adopt the Z geometry, in which the strands turn about the helical axis like a mirror image of the B form.
www.yourart.com /research/encyclopedia.cgi?subject=/ko:DNA   (5784 words)

  
 Helix disambiguation - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-03)
Start the Helix disambiguation article or add a request for it.
Look for Helix disambiguation in the Commons, our repository for free images, music, sound, and video.
Check for Helix disambiguation in the deletion log, or visit its deletion vote page if it exists.
www.sciencedaily.com /encyclopedia/helix__disambiguation_   (145 words)

  
 Screw: Encyclopedia topic   (Site not responding. Last check: 2007-11-03)
A screw is a shaft with a helical (helical: a helix (pl: helices), from the greek word /,...
The material may be manufactured with the mating helix (tapped), or the screw may create it when first driven in (a self-tapping screw).
The head is specially shaped to allow a screwdriver (screwdriver: A hand tool for driving screws; has a tip that fits into the head of a screw) or wrench (wrench: A hand tool that is used to hold or twist a nut or bolt) to grip the screw when driving it in.
www.absoluteastronomy.com /reference/screw   (3399 words)

  
 DNA
Each vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar, a phosphate and one of four kinds of Aromatic hydrocarbon "bases".
In a DNA double helix, two polynucleotide strands can associate through the hydrophobic effect.
Watson and Crick were able to discern that this distance was constant and to measure its exact value of 2 nanometres from an X-ray pattern obtained by Franklin.
www.askfactmaster.com /DNA   (3211 words)

  
 Screw
A screw is a shaft with a helical groove formed on its surface.
The material may be manufactured with the mating helix, or the screw may create it when first driven in.
The head is specially shaped to allow a screwdriver or wrench to grip the screw when driving it in.
www.datamass.net /sc/screw.html   (2366 words)

  
 Helix (disambiguation) - Encyclopedia Glossary Meaning Explanation Helix (disambiguation)   (Site not responding. Last check: 2007-11-03)
Helix (disambiguation) - Encyclopedia Glossary Meaning Explanation Helix (disambiguation).
Here you will find more informations about Helix (disambiguation).
* Helix (genus), the genus of terrestrial snails
www.encyclopedia-glossary.com /en/Helix-disambiguation.html   (131 words)

  
 Community Yellow Pages   (Site not responding. Last check: 2007-11-03)
The hydrogen bonds between the strands of the double helix are weak enough that they can be easily separated by DNA polymerase.
The narrow breadth of the double helix makes it impossible to detect by conventional proteins known as histones, around which DNA winds.
When DNA is in solution, it undergoes conformational fluctuations due to the energy available in the worm-like chain model with a persistence length of about 53 nm.
www.ecologyiworld.com /wiki-DNA   (3904 words)

  
 helix (disambiguation)   (Site not responding. Last check: 2007-11-03)
The genus of terrestrial snails, see genus Helix.
This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name.
If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.
www.yourencyclopedia.net /Helix_(disambiguation)   (109 words)

  
 Revisiting DNA : Exploring Essential Information, Data and Explanation.
The diversity of the bases means that there are four kinds of nucleotides, which are commonly referred to by the identity of their bases.
Cambridge University, Crick and Watson were building physical models using metal rods and balls, in which they incorporated the known chemical structures of the nucleotides, as well as the known position of the linkages joining one nucleotide to the next along the polymer.
The Double Helix: A Personal Account of the Discovery of the Structure of DNA (Scribner Classics) by James D. Watson
llpoh.codex23.com /Biology_Update/DNA.html   (4165 words)

  
 Vortex - ExampleProblems
It is a vector quantity, whose direction is (roughly speaking) along the axis of the swirl.
Also in fluid dynamics, the movement of a fluid can be said to be vortical if the fluid moves around in a circle, or in a helix, or if it tends to spin around some axis.
A good example of a vortex is the atmospheric phenomenon of a whirlwind or a tornado or dust devil.
www.exampleproblems.com /wiki/index.php/Vortex   (737 words)

  
 helix - OneLook Dictionary Search
Helix, helix : Dorland's Illustrated Medical Dictionary [home, info]
Phrases that include helix: double helix, hedera helix, helix hortensis, large muscle of helix, pauling corey helix, more...
Words similar to helix: spiral, coil, helices, helixes, volute, whorl, genus helix, more...
www.onelook.com /?loc=rz1&w=helix   (380 words)

  
 helix
A conic helix may be defined as a spiral on a conic surface, with the distance to the apex an exponential function of the angle indicating direction from the axis.da:Skruelinje de:Helix nl:helix pl:Linia śrubowa sv:Helix
The Spar store in Mill Road was left in tatters after it was struck by a stolen Toyota Helix.
Although the gang of four masked raiders fled empty-handed, the store was trashed.
www.icorrection.com /Ana-H/helix.php   (473 words)

  
 Progressive external ophthalmoparesis   (Site not responding. Last check: 2007-11-03)
DNA (disambiguation) Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and most viruses).
Of the three groups, only the London group was able to produce good quality diffraction patterns and thus produce sufficient quantitative data about the structure X-ray diffraction
- The Double Helix: A Personal Account of the Discovery of the Structure of DNA (Norton Critical Editions), by James D. Watson.
progressive.external.ophthalmoparesis.en.reference.pl   (10650 words)

  
 Helix - OneLook Dictionary Search
HELIX : 1911 edition of the Encyclopedia Britannica [home, info]
Helix : Columbia Gazetteer of North America [home, info]
Helix, helix : LookWAYup Translating Dictionary/Thesaurus [home, info]
www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=Helix   (380 words)

  
 Helix - Unipedia   (Site not responding. Last check: 2007-11-03)
The Double Helix : A Personal Account of the Discovery of the Structure of DNA
The Double Helix: A Personal Account of the Discovery of the Structure of DNA (Norton Critical Editions)
The Meaning of It All: Thoughts of a Citizen Scientist (Helix Books)
www.unipedia.info /Helix.html   (438 words)

  
 Multiple cloning site   (Site not responding. Last check: 2007-11-03)
A multiple cloning site (MCS) is a short segment of DNA
The enzyme makes two incisions, one through each of the phosphate backbones of the double helix without damaging the bases.
The chemical bonds that the enzymes cleave can be reformed by other enzymes known as ligases, so that restriction fragments carved from different chromosomes or genes can be spliced together, provided their ends are complementary (more below).
multiple.cloning.site.en.reference.pl   (9440 words)

  
 Gear   (Site not responding. Last check: 2007-11-03)
:For other uses of this term, see Gear (disambiguation)
Gear (disambiguation) A gear is a toothed wheel
The former called the quantity quantité de travail and the latter, travail mécanique and both championed its use in engineering calculation.
slika.jalen.posoda2.jpg.sl.reference.pl /en/gear   (8771 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.