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Topic: Pentadecane


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In the News (Fri 27 Nov 09)

  
  Theory for the nonequilibrium dynamics of flexible polymers: relaxation of pentadecane from an all-trans conformation   (Site not responding. Last check: 2007-10-13)
A recent mode-coupling theory for the long time dynamics of flexible polymers based on an eigenfunction expansion of the diffusion equation is extended to treat nonequilibrium relaxations that occur during sudden transitions between two states.
The theory is tested for the ``unfolding'' of pentadecane from a constrained all-trans state to a random-coil at 300K.
The lack of time translation symmetry for nonequilibrium processes requires that \langle R_end^2(t) \rangle_neq is obtained from an average over a huge number of independent BD trajectories (9000 are necessary to obtain adequate convergence for pentadecane), rather than over the successive configurations from a single trajectory used to compute equilibrium time correlation functions.
flux.aps.org /meetings/YR98/BAPSMAR98/abs/S1875051.html   (249 words)

  
 13-Oxabicyclo[10.3.0]pentadecane, its preparation and use in perfume compositions and as an odorant - Patent 4222904
Cyclododecanone (I) is condensed with a bromoacetic ester to form the corresponding hydroxyester (II).
The hydroxyester is rearranged to the oxabicyclo pentadecane lactone (III) by heating in a strongly acid medium.
The odor is characterized as a warm amber nuance.
www.freepatentsonline.com /4222904.html   (1322 words)

  
 Anaerobic Transformation of Alkanes to Fatty Acids by a Sulfate-Reducing Bacterium, Strain Hxd3 -- So et al. 69 (7): ...
of Hxd3 grown on perdeuterated pentadecane and [1,2-
pentadecane was used as the substrate, the 14:0 and 16:0 fatty
The unlabeled C-even fatty acids are represented by fl bars, and the unlabeled C-odd fatty acids are represented by white bars.
aem.asm.org /cgi/content/full/69/7/3892   (5154 words)

  
 Pentacrostic, Pentad, Pentadactyl, Pentadactyle, Pentadactyloid, Pentadecane, Pentadecatoic, Pentadecylic, ...   (Site not responding. Last check: 2007-10-13)
Pentacrostic : A set of verses so disposed that the name forming the subject of the acrostic occurs five times -- the whole set of verses being divided into five different parts from top to bottom.
Pentadecane : A hydrocarbon of the paraffin series, (C15H32) found in petroleum, tar oil, etc., and obtained as a colorless liquid; -- so called from the fifteen carbon atoms in the molecule.
Pentadecatoic : Of, pertaining to, or derived from, pentadecane, or designating an acid related to it.
www.sanjeev.net.cob-web.org:8888 /vocabulary/p/p-0238.html   (230 words)

  
 Chemical composition of anther volatiles in Ranunculaceae: genera-specific profiles in Anemone, Aquilegia, Caltha, ...
and pentadecane combined explain 4.3% of total variation.
Both, protoanemonin and pentadecane, may originally act as defenses
Zinner K. 1986 Some physicochemical aspects of the defensive reactions of carabid beetles—the presence of pentadecane.
www.amjbot.org /cgi/content/full/91/12/1969   (5837 words)

  
 New Pathway for Long-Chain n-Alkane Synthesis via 1-Alcohol in Vibrio furnissii M1 -- Park 187 (4): 1426 -- The Journal ...
This result cannot be explained by the decarbonylation pathway.
(ii) Pentadecane and hexadecane were produced from 1-hexadecanoic
GC-MS data for the alkanes produced from 1-hexadecanoic acid in the presence of the membrane fraction from V.
jb.asm.org /cgi/content/full/187/4/1426   (1438 words)

  
 Pristane induced gene activation.
Garrett LR; Jones CJ; Cuchens MA; Department of Microbiology University of Mississippi Medical; Center, Jackson 39216-4505.
Studies were performed to examine the effects of 2,6,10,14-tetramethyl pentadecane (pristane) versus 12-O-tetradecanoylphorbol 13-acetate (TPA) on the activation of the CAT gene under the regulatory control of viral promoter/enhancer elements transfected into NIH-3T3, CV-1 and COS-7 cells.
The results of these studies demonstrated that (1) pristane or TPA induced trans-activation of SV2cat, HIVcat, RSVcat and MMTVcat in cells transfected with each respective plasmid construct, (2) only pristane induced activation of pA10cat and pOSP/11 and (3) neither TPA nor pristane trans-activated pSV0cat.
www.aegis.com /aidsline/1992/apr/M9240088.html   (371 words)

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