نتایج جستجو برای: hexyl branch content

تعداد نتایج: 493133  

2008
Timo Paul Rieckborn Emine Karakoc Jin He Marc Heinrich Prosenc

The title compound, [PtCl(C(42)H(78)OP(4))]Cl·0.5CH(2)Cl(2)·4H(2)O, crystallizes as a contact ion-pair with two close inter-molecular C-H⋯Cl(-) contacts between CH acidic αH atoms of the phosphane ligand and the chloride anion. A chloride ligand together with three coordinating P ligand atoms create a slightly distorted square-planar coordination environment around the Pt(II) center. An inter-m...

Journal: :Chemical communications 2008
Ting Qi Yunlong Guo Yunqi Liu Hongxia Xi Hengjun Zhang Xike Gao Ying Liu Kun Lu Chunyan Du Giu Yu Daoben Zhu

A novel type of anti and syn isomers of a pentacyclic compound consisting of two thiophene rings and one pyrrole ring were efficiently synthesized from benzo[b]thiophene, and the anti isomer exhibits better charge transport and OFET properties compared with the syn isomer and its N-hexyl substitution.

Journal: :Organic & biomolecular chemistry 2013
Iani S Pereţeanu Thomas J J Müller

3,7-Diaminophenothiazine derivatives are readily synthesized via two-fold Buchwald-Hartwig coupling of 10-hexyl 3,7-dibromo-10H-phenothiazine with a series of primary and secondary anilines and amines. All derivatives possess two reversible oxidations at low potentials with remarkable semiquinone formation constants. The electronic structure of this novel class of phenothiazinyl-oligoanilines i...

2004
Francesca D’Antona Vittoria Caloi

Enhancement and spread of helium among globular cluster stars have been recently suggested as a way to explain the horizontal-branch blue tails in those clusters that show a primordial spread in the abundances of C, N, O, and other elements involved in advanced CNO burning. Helium enhancement is unavoidable if the matter responsible for the abundance spreads is identified with the matter lost b...

2004
Francesca D’Antona Vittoria Caloi

Enhancement and spread of helium among globular cluster stars have been recently suggested as a way to explain the horizontal branch blue tails, in those clusters which show a primordial spread in the abundances of CNO and other elements involved in advanced CNO burning. Helium enhancement is unavoidable, if the matter responsible for the abundance spreads is identified with the matter lost by ...

2018
Anna Lintunen Stefan Mayr Yann Salmon Hervé Cochard Teemu Hölttä

It is not well understood what determines the degree of supercooling of apoplastic sap in trees, although it determines the number and duration of annual freeze-thaw cycles in a given environment. We studied the linkage between apoplastic ice nucleation temperature, tree water status, and conduit size. We used branches of 10 gymnosperms and 16 angiosperms collected from an arboretum in Helsinki...

Journal: :Systematic and applied microbiology 1999
H Meier R Amann W Ludwig K H Schleifer

Almost one thousand 16S rRNA sequences of Gram-positive bacteria with a low DNA G + C content from public databases were analyzed using the ARB software package. A signature region was identified between positions 354 and 371 (E. coli numbering) for the Bacillus sub-branch of the Gram-positive bacteria with a low DNA G + C content, the former orders Bacillales and Lactobacillales. Three oligonu...

2013
ROSANNA CALIANDRO KERSTIN A NAGEL BERND KASTENHOLZ ROBERTO BASSI ZHIRONG LI KRISHNA K NIYOGI BARRY J POGSON ULRICH SCHURR SHIZUE MATSUBARA

Functions of α- and β-branch carotenoids in whole-plant acclimation to photo-oxidative stress were studied in Arabidopsis thaliana wild-type (wt) and carotenoid mutants, lutein deficient (lut2, lut5), non-photochemical quenching1 (npq1) and suppressor of zeaxanthin-less1 (szl1) npq1 double mutant. Photo-oxidative stress was applied by exposing plants to sunflecks. The sunflecks caused reduction...

2013
Walid H. Gharib Marc Robinson-Rechavi

Positive selection is widely estimated from protein coding sequence alignments by the nonsynonymous-to-synonymous ratio ω. Increasingly elaborate codon models are used in a likelihood framework for this estimation. Although there is widespread concern about the robustness of the estimation of the ω ratio, more efforts are needed to estimate this robustness, especially in the context of complex ...

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