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Ihor M. Tkachenko,Yaroslav L. Kobzar,Yurii V. Yakovlev,Oleg V. Shekera,Valeriy V. Klepko,Valery V. Shevchenko 한국고분자학회 2017 Macromolecular Research Vol.25 No.2
The strategy to the synthesis of the statistical and alternating fluorinated poly(arylene ether) (FPAE) copolymers with the same composition containing octafluorobiphenylene and trifluoromethyl units as well as meta-oxyphenylene fragments was proposed. The structures of the synthesised polymers were determined by Fourier transform infrared, 1H NMR, and 19F NMR spectroscopy techniques. The polymer’s characteristics including molecularweight, tensile strength, thermal stability, and dielectric characteristic were studied depending on the sequence distribution of co-monomers along the polymer chain. Despite the same overall composition, the statistical copolymer showed higher molecular weight and better mechanical properties whereas the alternating FPAE copolymer demonstrated better thermal stability as well as lower dielectric constant and loss factor.
Nedashkovskaya, Olga I,Suzuki, Makoto,Lee, Jung-Sook,Lee, Keun Chul,Shevchenko, Lyudmila S,Mikhailov, Valery V Society for General Microbiology 2009 International journal of systematic and evolutiona Vol.59 No.4
<P>Two novel aerobic, dark-orange-pigmented, Gram-negative bacterial strains, designated KMM 3531(T) and KMM 3953, were isolated from the green alga Ulva fenestrata. Analysis of the 16S rRNA gene sequences showed that the strains represented a novel lineage within the family Flavobacteriaceae. The most closely related genera with validly published names were Costertonia, Flagellimonas, Kriegella, Maribacter, Muricauda and Zobellia, with 16S rRNA gene sequence similarities of 93.3-91.8 %. Cells of strains KMM 3531(T) and KMM 3953 were rod-shaped, motile by gliding and grew at temperatures up to 49 degrees C. They produced acid from carbohydrates and possessed oxidase, catalase, beta-galactosidase and agarase activities. The predominant cellular fatty acids were iso-C(15 : 0,) iso-C(17 : 0) 3-OH, iso-C(15 : 1) G, summed feature 3 (comprising C(16 : 1)omega7c and/or iso-capital ES, Cyrillic(15 : 0) 2-OH), iso-C(17 : 1)omega9c and iso-C(15 : 0) 3-OH. The DNA G+C content was 47-49 mol%. On the basis of phenotypic and genotypic characteristics, strains KMM 3531(T) and KMM 3953 represent a novel genus and species, for which the name Pseudozobellia thermophila gen. nov., sp. nov. is proposed. The type strain is KMM 3531(T) (=DSM 19858(T)=JCM 11733(T)=KCTC 22016(T)).</P>
Nedashkovskaya, Olga I,Vancanneyt, Marc,Cleenwerck, Ilse,Snauwaert, Cindy,Kim, Seung Bum,Lysenko, Anatoly M,Shevchenko, Lyudmila S,Lee, Kang Hyun,Park, Myung Soo,Frolova, Galina M,Mikhailov, Valery V Society for General Microbiology 2006 International journal of systematic and evolutiona Vol.56 No.1
<P>The taxonomic position of three novel, marine, heterotrophic, aerobic, pigmented, gliding bacteria, isolated from the green alga Ulva fenestrata in the Sea of Japan, was determined. 16S rRNA gene sequence analysis revealed that the strains belong to the genus Arenibacter. The results of DNA-DNA hybridization experiments supported by phenotypic and chemotaxonomic data showed that the isolates represent a novel species of the genus Arenibacter, for which the name Arenibacter palladensis sp. nov. is proposed. The type strain is KMM 3961T (= LMG 21972T = CIP 108849T).</P>