helix

Definitions

  • WordNet 3.6
    • n Helix type genus of the family Helicidae
    • n helix a structure consisting of something wound in a continuous series of loops "a coil of rope"
    • n helix a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Rosalind Franklin was the woman behind Watson and Crick's doudle helix DNA model. She did all the experiments, but died before she was paid credit. Watson and Crick merely took her results and interpreted it.
    • Helix (Arch) A caulicule or little volute under the abacus of the Corinthian capital.
    • Helix (Zoöl) A genus of land snails, including a large number of species.
    • Helix (Geom) A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.
    • Helix (Anat) The incurved margin or rim of the external ear. See Illust. of Ear.
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Century Dictionary and Cyclopedia
    • n helix A spiral line, as of wire in a coil; a winding, or something that is spiral; a circumvolution; specifically, in geometry, the curve assumed by a right line drawn on a plane when that plane is wrapped round a cylindrical surface of any kind, especially a right cylinder, as the curve of a screw-thread; also, a curve on any developable surface which becomes a right “line when the surface is developed into a plane, as a conical helix.
    • n helix In architecture, any spiral, particularly a small volute or twist under the abacus of the Corinthian capital; also, a volute of the Ionic capital. In every Corinthian capital of the fully developed type there are sixteen helices, two at each angle, and two meeting under the middle of each face of the abacus, branching out of the cauliculi or secondary stalks which rise from between the leaves.
    • n helix In electricity, a coil of wire, as that surrounding the core of an electromagnet.
    • n helix In anatomy: The prominent curved fold which forms most of the rim or margin of the outer ear. See second cut under ear.
    • n helix The cochlea of the inner ear.
    • n helix [capitalized] [NL.] In conchology, the representative genus of Helicidæ and Helicinæ. Widely different limits have been assigned to it, and more than 4,000 species have been referred to it, varying greatly in size, shape, and color. Typical species are the common garden-snail of Europe, H. hortensis, and the Roman snail, H. pomatia. By many recent authors the genus is more or less restricted to such as are related to these species, or to one or the other of them. See cuts under Gasteropoda and Pulmonata.—
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Chambers's Twentieth Century Dictionary
    • n Helix hē′liks a spiral, as of wire in a coil:
    • n Helix hē′liks (zool.) a genus of molluscs including the land-snails: the external part of the ear: a small volute or twist in the capital of a Corinthian column
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Etymology

Webster's Revised Unabridged Dictionary
L. helix, Gr. , , fr. to turn round; cf. L. volvere, and E. volute, voluble,
Chambers's Twentieth Century Dictionary
L.,—Gr. helix, helissein, to turn round.

Usage

In literature:

This helix was covered with calico, and then a second wire applied in the same manner.
"A History of Science, Volume 3(of 5)" by Henry Smith Williams
Description of a new Helix from the interior of Australia, by Dr. L. Pfeiffer.
"Explorations in Australia, The Journals of John McDouall Stuart" by John McDouall Stuart
By connecting one of the coils, A, with the battery by means of the wires, the action of a helix or solenoid is shown.
"Scientific American Supplement, No. 794, March 21, 1891" by Various
Filings do not adhere to the sides of the helix, but they cling in clusters to the ends of the coil.
"General Science" by Bertha M. Clark
The helix or scroll is freely introduced in this variety.
"Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879" by James Stevenson
His next paper was on four new species of Helix.
"Lamarck, the Founder of Evolution" by Alpheus Spring Packard
HELIX POMATIA, love of amusement in, 123; author's observations, 124.
"The Dawn of Reason" by James Weir
Single Volute Helix Spring.
"Practical Mechanics for Boys" by J. S. Zerbe
Meyer, Professor Ludwig, on helix of the human ear, 86.
"Darwin, and After Darwin (Vol. 1 and 3, of 3)" by George John Romanes
Idiots often show excessive development of the anti-helix, while the helix itself is reduced to a flattened strip.
"Criminal Man" by Gina Lombroso-Ferrero
You see this bent glass tube surrounded by the helix?
"Stories by American Authors, Volume 8" by Various
All at once I seemed to know that Lyone was laid in the heart of the helix held by the hehorrent.
"The Goddess of Atvatabar" by William R. Bradshaw
Helix, range of species of, 650.
"Principles of Geology" by Charles Lyell
If we wind the wire into a coil, or helix, these magnetic lines are concentrated.
"Electricity and Magnetism" by Elisha Gray
The peculiarity consists in a little blunt point, projecting from the inwardly folded margin, or helix.
"The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)" by Charles Darwin
The helix ends of the bobbins should stand uppermost, as shown at Fig.
"Electric Bells and All About Them" by S. R. Bottone
M is a helix of coarse wire in a circuit from the lower carbon holder to the negative binding screw -.
"The inventions, researches and writings of Nikola Tesla" by Thomas Commerford Martin
Such a suspended helix may therefore be used as a compass.
"Physics" by Willis Eugene Tower
It consisted of a continuous helix of copper tubing, 3/8 in.
"The Theory and Practice of Model Aeroplaning" by V. E. Johnson
His mind seemed to trail out in a great nebular helix behind the descending ship.
"Astounding Stories of Super-Science January 1930" by Victor Rousseau
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In news:

Former Cougars Todd Watkins, Casey Tiumalu and Leon White also played at Helix, which is in La Mesa, Calif.
INTERVIEWS Hear Justice's 'Helix' Unwound for Another Remix EP.
Celtic Woman perform Yuletide songs at the Helix in Dublin, Ireland.
Helix Families Fuming Over High School Boundary Changes.
One Mt Helix parent is challenging new boundaries for Grossmont high schools.
New Wayne Helix fuel dispensers are on display in London at the 2012 Olympic and Paralympic Games.
INTERVIEWS Hear Justice's ' Helix ' Unwound for Another Remix EP.
Water Pipe Breaks at Helix High School.
Helix , 83, recently elected to the city council is among the oldest elected officials in the Bay Area.
AURORA, ON — Helix BioPharma Corp. (TSX: HBP FRANKFURT: HBP "HBP"), a biopharmaceutical company developing drug candidates for the prevention and treatment of cancer, today announced financial results for the year ended July 31, 2012.
Helix Energy Solutions Group to sell pipelay vessels, 'Caesar, Express', 'Intrepid' & related equipment in separate transactions for a total $252,750,000.
Inhibitors That Put A Kink in Abl's Helix .
Ramona High School's boys water polo team won its Sept 11 match at Helix before losing a game at Westview on Sept 13.
Tonight marks the start of a yearlong project to overhaul the helix that leads into the Lincoln Tunnel from New Jersey.
Nicknamed the " Helix Fix", the months-long project aims to repair the spiraling roadway feeding into the Lincoln Tunnel.
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In science:

It is therefore justified to neglect the entropy of the double-stranded helix .
Comment on "Why is the DNA denaturation transition first order?"
The distance between the adjacent sites in the linear lattice is 4˚A(approximately the vertical distance between two DNA base pairs in the double helix).
Relaxation in open one-dimensional systems
Simple but yet a notable model among then is the zipper model which defines the helix chain.
Investigation of the Heat Capacities of Proteins by Statistical Mechanical Methods
In the case of the helix, K strikes Kc for the first time in the example tra jectory before Q hits 1 for the first time.
Chirality and Protein Folding
At the vicinity of the optimal temperature, the establishment of native-like chirality and of the native-like number of contacts, separately, is seen to be almost simultaneous for the helix.
Chirality and Protein Folding
This feature is llustrated in Figure 6 for the helix and the hairpin.
Chirality and Protein Folding
With the simple Q criterion (Figure 3) the defects arise at any site and can extend throughout the helix.
Chirality and Protein Folding
For crambin and the helix, there is no divergence.
Chirality and Protein Folding
This F (Q, R) for the helix is shown in Figure 10 at the temperature of optimal folding.
Chirality and Protein Folding
The folding scenarios of the helix, hairpin and crambin are shown in Figures 11 through 13 where the case of κ=1 is compared to that of κ=0.
Chirality and Protein Folding
In the case of the helix with κ=1, the average times to establish pair-wise chirality are nearly site independent and practically equal to times needed to establish the contacts (independent of the establishment of the chirality).
Chirality and Protein Folding
One example of the difference is shown in the right hand panel of Figure 15 which shows no saturation phenomenon in the dependence of the characteristic temperatures on Υ for the helix.
Chirality and Protein Folding
We have found that the α-protein 1rpo behaves like a helix in that it responds correctly to the chirality potential better than to the angular potential.
Chirality and Protein Folding
For the helix data shown in the left panel, tQ and tKQ coincide within the scale of the figure.
Chirality and Protein Folding
FIG. 10: The free energy corresponding to specific values of Q and R (the RMSD distance away from the native state) for the helix at ˜T = 0.3.
Chirality and Protein Folding
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