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E.V. Antonakou K.G. Kalogiannis S.D. Stephanidis K.S. Triantafyllidis A.A. Lappas D.S. Achilias 《Waste management (New York, N.Y.)》2014,34(12):2487-2493
Pyrolysis appears to be a promising recycling process since it could convert the disposed polymers to hydrocarbon based fuels or various useful chemicals. In the current study, two model polymers found in WEEEs, namely polycarbonate (PC) and high impact polystyrene (HIPS) and their counterparts found in waste commercial Compact Discs (CDs) were pyrolysed in a bench scale reactor. Both, thermal pyrolysis and pyrolysis in the presence of two catalytic materials (basic MgO and acidic ZSM-5 zeolite) was performed for all four types of polymers. Results have shown significant recovery of the monomers and valuable chemicals (phenols in the case of PC and aromatic hydrocarbons in the case of HIPS), while catalysts seem to decrease the selectivity towards the monomers and enhance the selectivity towards other desirable compounds. 相似文献
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A. Triantafyllidis I. Leonardos I. Bista I. D. Kyriazis M. Th. Stoumboudi I. Kappas F. Amat T. J. Abatzopoulos 《Marine Biology》2007,152(5):1159-1167
The purpose of this study was to determine the phylogeographic structure of the brackish-hypersaline cyprinodont fish Aphanius fasciatus (Valenciennes, 1821), using sequencing and RFLP analysis of a 1,330 bp mitochondrial DNA segment containing part of the 16S
rRNA gene as well as the genes for tRNA-Leu, NADH subunit 1 and tRNA-Ile. Individuals were collected from 13 different sites
in Greece and Turkey, while seven published A. fasciatus sequences were also included to cover the area of distribution of the species. Pairwise sequence divergence values ranged
from 0 to 4.51%. Congruent phylogenies were recovered with maximum likelihood, maximum parsimony and neighbour-joining methods.
All analyses revealed two main groups. The first group consists of populations from almost all localities that drain into
the Aegean Sea. The second group comprises the remaining population samples, which in some cases seem to consist of population-specific
subgroups. Our results show that vicariant events have predominantly affected the evolution of A. fasciatus, with the Messinian salinity crisis having shaped the present genetic structure of its populations. Additionally, the life-history
traits of the species, which determine a low potential for dispersal, coupled with the typical fragmentation of brackish-hypersaline
water habitats have led to a high degree of isolation of A. fasciatus populations, even at restricted spatial scales. Analysis of the partitioning of the total amount of polymorphism with analyses
of molecular variance (AMOVA) gave a value of F
ST = 84.6%. Potential conservation policies concerning A. fasciatus should also consider the low-genetic variability in the majority of its populations and the presence of fixed haplotypes
in some of them. 相似文献
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Recent reports indicate an extensive amount of molecular evolution separating cryptic taxa as well as significant population
structure at a microgeographical scale. Appropriate molecular markers are particularly suitable for distinguishing cryptic
biological species. In this study, we examine the phylogenetic utility of 16S rRNA in elucidating the evolutionary relationships
within the recently described euryhaline Brachionus plicatilis species complex. In addition, we assess the applicability of this marker in the genetic identification and monitoring of
rotifer populations. We have sequenced a 378-bp fragment of the mitochondrial 16S rRNA gene in laboratory reference strains,
hatchery clones as well as collections from a wild population of the subsaline Lake Koroneia (Northern Greece). Also, restriction
fragment length polymorphism (RFLP) analysis was performed with eight restriction endonucleases. Rotifer samples are distinguished
into six genetically divergent lineages. Average sequence divergence between lineages is 0.1038. The evolutionary relationships
and divergence time-scales revealed with the 16S sequence data are in agreement with previous analyses using different mitochondrial
and nuclear markers. The 16S region appears to have several advantages over other regions of the genome regarding use of species-specific
primers, ease of amplification from single specimens and undiluted informational content over both recent and more ancient
separations. It has also exhibited maximum discriminatory power (100% success) between lineages during RFLP analysis. The
16S assayed region has proven especially informative and consistent in detecting, supporting and establishing the lineage
status within the B. plicatilis species complex both from a phylogenetic perspective and as an identification tool. 相似文献
4.
Rekos Kyriazis Kampouraki Zoi-Christina Panou Chrisowalantou Baspanelou Alexandra Triantafyllidis Konstantinos Deliyanni Eleni 《Environmental science and pollution research international》2021,28(42):59050-59062
Environmental Science and Pollution Research - Adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from solutions in hexane and hexadecane respectively as well as in... 相似文献
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A.?Triantafyllidis A.?P.?Apostolidis V.?Katsares E.?Kelly J.?Mercer M.?Hughes K.?E.?J?rstad A.?Tsolou R.?Hynes C.?TriantaphyllidisEmail author 《Marine Biology》2005,146(2):223-235
The genetic differentiation of the European lobster (Homarus gammarus) was investigated in 3,283 individuals from 44 population samples throughout its geographical distribution (Norway to Greece) by means of polymerase chain reaction restriction fragment length polymorphism analysis of a 3-kb mitochondrial DNA segment. Ninety composite haplotypes were revealed with the number of haplotypes in each population sample ranging from 4 to 31. Private haplotypes were found at very low frequencies. The global exact test of sample differentiation based on composite haplotype frequencies was statistically significant. FST analyses also showed significant heterogeneity among the European lobster population samples (FST=0.078, P<0.001). This differentiation was mainly due to the population samples from northern Norway, the Netherlands, and the Mediterranean Sea. These samples differentiated from the rest due to reduced gene diversity rather than to unique haplotypes. The relationships among these samples were illustrated with cluster analyses; four major distinct groups were evident: Mediterranean, northern Norway, Netherlands, and the remaining Atlantic samples. Based on the low degree of differentiation revealed in the European lobster and its limited capacity for dispersal, the most probable hypothesis is that all populations have been established from a common refuge after the end of the last Ice Age, that is, within the past 15,000 years. The results of this study show that mitochondrial DNA is a powerful tool for the determination of the genetic structure among lobster samples, which is important for a proper management policy designed to protect and to cultivate this species.Communicated by O. Kinne, Oldendorf/Luhe 相似文献
6.
Geczo Alexandra Giannakoudakis Dimitrios Andreas Triantafyllidis Konstantinos Elshaer Mohammed Ragab Rodríguez-Aguado Elena Bashkova Svetlana 《Environmental science and pollution research international》2021,28(42):58969-58982
Environmental Science and Pollution Research - Activated carbons prepared from cashew nut shells by chemical activation with phosphoric acid were tested for the removal of acetaminophen. It was... 相似文献
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