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Topic: Cyclic


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In the News (Wed 9 Dec 09)

  
  Cyclic quadrilateral - Wikipedia, the free encyclopedia
In geometry, a cyclic quadrilateral is a quadrilateral whose vertices all lie on a single circle.
The area of a cyclic quadrilateral is given by Brahmagupta's formula as well as Heron's formula as long as the sides are given.
The area of a cyclic quadrilateral is maximal among all quadrilaterals having the same side lengths.
en.wikipedia.org /wiki/Cyclic_quadrilateral   (151 words)

  
 Cyclic group - Wikipedia, the free encyclopedia
In group theory, a cyclic group is a group that can be generated by a single element, in the sense that the group has an element a (called a "generator" of the group) such that, when written multiplicatively, every element of the group is a power of a.
The cyclic groups are the simplest groups and they are completely classified: every cyclic group is isomorphic to one of those mentioned.
The cycle graphs of cyclic groups are all n-sided polygons with the elements at the vertices.
en.wikipedia.org /wiki/Cyclic_group   (1117 words)

  
 PlanetMath: cyclic semigroup
A semigroup which is generated by a single element is called a cyclic semigroup.
Unlike in the group case, however, there are in general multiple non-isomorphic cyclic semigroups with the same number of elements.
This is version 3 of cyclic semigroup, born on 2002-11-01, modified 2002-11-02.
planetmath.org /encyclopedia/Index3.html   (105 words)

  
 PlanetMath: characteristic of a cyclic ring
The characteristic of an infinite cyclic ring is 0.
A finite ring is cyclic if and only if its order and characteristic are equal.
This is version 4 of characteristic of a cyclic ring, born on 2003-03-11, modified 2004-04-30.
www.planetmath.org /encyclopedia/Characteristic2.html   (154 words)

  
 Cyclic adenosine monophosphate - Wikipedia, the free encyclopedia
Cyclic adenosine monophosphate (cAMP, cyclic AMP or 3'-5'-cyclic adenosine monophosphate) is a molecule that is important in many biological processes; it is derived from adenosine triphosphate (ATP).
Cyclic AMP is involved in some protein kinases.
Cyclic AMP binds to specific locations on the regulatory units of the protein kinase, and causes dissociation between the regulatory and catalytic subunits, thus activating the catalytic units and enabling them to phosphorylate substrate proteins.
en.wikipedia.org /wiki/Cyclic_adenosine_monophosphate   (411 words)

  
 Pilot Cyclic Control Stick   (Site not responding. Last check: 2007-10-20)
The cyclic grip mounted switch is used to disengage the pitch, roll, and yaw channels simultaneously.
The longitudinal cyclic control linkage is routed from the cyclic stick through the SCAS actuator, the dual boost hydraulic actuator to the right horn of the fixed swashplate ring.
Depressing the cyclic stick force trim switch will cause the magnetic brake and force gradient to be repositioned to correspond to the positions of the cyclic stick and pedals thus providing trim.
incolor.inetnebr.com /iceman/pilot36.htm   (220 words)

  
 Cyclic Neutropenia   (Site not responding. Last check: 2007-10-20)
Cyclic neutropenia is another inherited type of neutropenia.
Cyclic neutropenia occurs because of fluctuating rates of cell production by the bone marrow stem cells.
Cyclic neutropenia can occur sporadically, but there are families in which cyclic neutropenia is inherited with one parent and more than one child affected.
depts.washington.edu /registry/Cyclic.htm   (329 words)

  
 cyclic   (Site not responding. Last check: 2007-10-20)
Then the envelope of the circles C2 is the cyclic of curve C. The parameter a is called the power (of inversion).
Parameter 'a' being unequal zero, the cyclic is an anallagmatic curve.
For parameter 'a' being zero, the cyclic is said to be equal to an orthotomic.
www.2dcurves.com /derived/cyclic.html   (170 words)

  
 ADINA News Group
The primary cyclic component is no longer required to be aligned with the X-Y plane, and the axis of cyclic symmetry can have any orientation in space.
Cyclic symmetry analysis is useful for components where the geometry and boundary conditions are rotationally symmetric.
The memory required for cyclic symmetry analysis is typically an order of magnitude less than that required for the full analysis, and the solution time can also be an order of magnitude smaller.
www.adina.com /newsg0K.shtml   (183 words)

  
 cyclic compound on Encyclopedia.com
A cyclic compound that behaves chemically like the open-chain aliphatic compounds is said to be alicyclic; cyclohexane is such a compound.
[C.sub.2]-ceramide influences the expression and insulin-mediated regulation of cyclic nucleotide phosphodiesterase 3B and lipolysis in 3T3-L1 adipocytes.
The use of aluminium phenolate in ortho-alkylation of phenol and hydroquinone with alkadienes: formation of cyclic ethers.
www.encyclopedia.com /html/c1/cyclicco.asp   (382 words)

  
 CYCLIC.HTM   (Site not responding. Last check: 2007-10-20)
If a cyclic boundary at x=0 is not required, XCYCLE is left at its default setting of F; if it is set T, the whole x=0 boundary is treated as cyclic.
Cyclic boundary conditions are required whenever the two ends of the calculation domain in the x-direction join up with one another.
Cyclic conditions are appropriate not only when x=0 to 360 is considered, but also when 'repetition' is present in the flow to be analysed.
www.cham.co.uk /phoenics/d_polis/d_enc/cyclic.htm   (588 words)

  
 cyclic - definition by dict.die.net   (Site not responding. Last check: 2007-10-20)
cyclic adj 1: (thermodynamics) conforming to the Carnot cycle 2: botany; forming a whorl or having parts arranged in a whorl; "cyclic petals"; "cyclic flowers" [ant: acyclic] 3: chemistry; having atoms arranged in a ring structure [ant: acyclic] 4: recurring in cycles [syn: cyclical] [ant: noncyclic] 5: marked by repeated cycles
Cyclic chorus, the chorus which performed the songs and dances of the dithyrambic odes at Athens, dancing round the altar of Bacchus in a circle.
Cyclic poets, certain epic poets who followed Homer, and wrote merely on the Trojan war and its heroes; -- so called because keeping within the circle of a single subject.
dict.die.net /cyclic   (143 words)

  
 Cyclic group   (Site not responding. Last check: 2007-10-20)
cyclic cyclic redundancy harddisk group group medical group medicine group orlando group policy focus group group scheduling group term group therapy group marketing group life
Cyclic Vomiting Syndrome CVS is a childhood disorder characterized by bouts of vomiting that last from a few hours to several days.
Cyclic Vomiting Syndrome CVS is an uncommon, unexplained disorder of children and some adults that is characterized by recurrent, prolonged episodes of severe nausea, vomiting and prostration with no apparent cause.
www.serebella.com /encyclopedia/article-Cyclic_group_.html   (349 words)

  
 CYCLIC GROUPS   (Site not responding. Last check: 2007-10-20)
of the cyclic group or that the group is generated by x.
For a finite cyclic group G having n elements, any element of order n is a generator.
It follows that a cyclic group is an abelian group although not every abelian group is a cyclic group.
www.math.csusb.edu /notes/advanced/algebra/gp/node4.html   (135 words)

  
 PlanetMath: cyclic group
It is a corollary of Lagrange's Theorem that every group of prime order is cyclic.
All cyclic groups of the same order are isomorphic to one other.
This is version 11 of cyclic group, born on 2002-02-19, modified 2004-11-05.
planetmath.org /encyclopedia/CyclicGroup.html   (136 words)

  
 Introduction to cyclic GMP
Synthesis and degradation of the cyclic GMP molecule.
Cyclic AMP was the first molecule recognized as second messenger and its mechanisms of synthesis are known since decades.
On the other hand, although cyclic GMP was also discovered very early (it was discovered in urine in 1963) and considered a second messenger since 1970, the regulation of its synthesis has remained a mystery until recently.
www.blauplanet.com /cgmp/intcgmp.html   (267 words)

  
 Lifetime predictions for resin-based composites using cyclic and dynamic fatigue.   (Site not responding. Last check: 2007-10-20)
Because dental restorative materials undergo fatigue in use, testing is often performed in the laboratory to evaluate material responses to cyclic loading.
Cyclic fatigue was carried out at a frequency of 5 Hz, while dynamic fatigue testing spanned seven decades of stress rate application.
Cyclic fatigue is a more conservative means of predicting lifetimes of resin-based composites.
www.arclab.org /medlineupdates/abstract_11319737.html   (213 words)

  
 "The Cyclic Form in North Indian Tabla" by David Courtney
The alternation between the cyclic and the cadential material is the aesthetic dynamo which drives Indian music forward.
The cyclic material is the groove or rhythmic foundation upon which the main musician builds the performance.
The bols are the mnemonic syllables; cyclic material cuts across the spectrum, so any and every bol of tabla may be found.
www.chandrakantha.com /tablasite/articles/cyclic.htm   (3455 words)

  
 Health Information | Health & Safety Resources | Child Health & Safety | Children's Hospital & Regional ...
Cyclic vomiting syndrome, or CVS, is a disorder characterized by recurrent and severe episodes of vomiting.
Because its cause is unknown and there is not a laboratory test for it, this condition is considered a syndrome, rather than a disease.
Most often, cyclic vomiting syndrome is confused with stomach flu or viral gastroenteritis.
www.pediatricweb.com /seattle/article.asp?ArticleID=797&ArticleType=9   (1422 words)

  
 "The Endless Universe: Introduction to the Cyclic Universe" by Paul J. Steinhardt, Ph.D.
Cyclic Universe: The Big Bang was not the beginning of time because the universe undergoes endless cycles of evolution in infinite space and time.
The cyclic model builds on lessons learned from the ekpyrotic example to produce a picture with remarkable predictive and explanatory power.
The Cyclic Universe builds upon this model, which is based on the idea that our hot big bang universe was created from the collision of two three-dimensional worlds moving along a hidden, extra dimension.
www.actionbioscience.org /newfrontiers/steinhardt.html   (1928 words)

  
 Cyclic guanosine monophosphate   (Site not responding. Last check: 2007-10-20)
Cyclic guanosine monophosphate (cGMP) is a second messenger derived from GTP.
Cyclic guanosine monophosphate (cGMP) is a cyclic nucleotide derived from guanosine triphosphate (GTP).
Cyclic nucleotide phosphodiesterases (PDE 1-6) degrade cGMP by hydrolyzing cGMP into 5'-GMP.
www.freeglossary.com /Cyclic_GMP   (379 words)

  
 Journal of Electronic Materials: Characterization and Modeling of Static and Cyclic Relaxation in Nonconductive ...
The phenomenon of slower relaxation of the adhesive under cyclic loading than that in static loading suggests that accelerated reliability testing used in solder-joint fatigue durability investigations may not be directly applicable to the adhesive interconnections.
The cyclic relaxation behavior of the NCA was simulated by varying the ramp, the no-load duration of the square waveform, and the frequency of sinusoidal waveform.
The cyclic relaxation was shown to be slower than the static one regardless of the no-load time imposed.
www.findarticles.com /p/articles/mi_qa3776/is_200409/ai_n9415685   (1384 words)

  
 Cyclic Vomiting Syndrome
Cyclic Vomiting Syndrome (CVS) is an uncommon, unexplained disorder of children and adults.
Cyclic Vomiting Syndrome is characterized by recurrent, prolonged attacks of severe nausea, vomiting and prostration with no apparent cause.
Cyclic Vomiting Syndrome is very difficult to diagnose.
www.mamashealth.com /syndrome/cyclic.asp   (297 words)

  
 Cyclic Voltammetry Primer   (Site not responding. Last check: 2007-10-20)
A more commonly used variation of the technique is cyclic voltammetry, in which the direction of the potential is reversed at the end of the first scan.
In addition, it is a powerful tool for the determination of formal redox potentials, detection of chemical reactions that precede or follow the electrochemical reaction and evaluation of electron transfer kinetics.
In fact, it is these "non-ideal" situations which are usually of greatest chemical interest and for which the diagnostic properties of cyclic voltammetry are particularly suited.
www-biol.paisley.ac.uk /marco/Enzyme_Electrode/Chapter1/Cyclic_Voltammetry1.htm   (789 words)

  
 cyclic AMP ELISA (Regular & Direct) > cyclic AMP Assay Kit > Assay Designs   (Site not responding. Last check: 2007-10-20)
A number of hormones are known to activate cyclic AMP through the action of the enzyme adenylate cyclase which converts ATP to cyclic AMP.
Because cyclic AMP has been shown to be involved in the cardiovascular and nervous systems, immune mechanisms, cell growth and differentiation, and general metabolism, there remains considerable interest in the measurement of intracellular concentrations in tissues and cell cultures.
The investigation of cyclic AMP may help to provide a clearer understanding of the physiology and pathology of many disease states.
www.assaydesigns.com /products/catalog/immuno_assay/product_cAMP.htm   (303 words)

  
 Cyclic Response of Axially Loaded Tapered Piles
In this study, the characteristics of the cyclic response of tapered piles were established from experimental investigation.
As a result, it is recommended that the amplitude of the cyclic load be limited to 25% of the static axial capacity and 75% of the static uplift capacity to ensure satisfactory performance of tapered piles.
In this case, the performance of tapered piles under cyclic axial load was found to be superior to that of straight-sided wall piles.
www.astm.org /JOURNALS/GEOTECH/PAGES/288.htm   (295 words)

  
 Cyclic Ducted Vacuum Security Alarms   (Site not responding. Last check: 2007-10-20)
If you take a standard 1200 watt (2 horse power) domestic vacuum cleaner and compare it with a 1200 watt ducted vacuum system the airflow in the ducted system is twice that of the domestic cleaner.
Cyclic Ducted Vacuums use motors with large 10mm impeller blades and by using two motors double the air flow of single motor machines.
The "cyclic" action of the octagonal Cyclic Ducted Vacuum provides a far superior and more efficient cleaning system.
www.cyclic.com.au /Planning.asp   (709 words)

  
 Detection and Visualization of Cyclic Multivariate Data
Cyclic multivariate data is encountered in a variety of disciplines, including astronomy/astrophysics, medicine, time series analysis, global change studies, and production management.
Visualizing the data in such a way that the cyclic nature of the data were enhanced and accessible would be desirable, and would provide the viewer greater insight into the data set.
Multivariate data may have variables cyclic with respect to the same dimension, or may have variables cyclic with respect to different dimensions, or may not be cyclic at all.
web.cs.wpi.edu /~matt/courses/cs563/talks/Cyclic_Presentation   (2239 words)

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