Search results for "compositional heterogeneity"

showing 3 items of 3 documents

Studies of structural composition distribution heterogeneity in ethylene/1-hexene copolymers using thermal fractionation technique (SSA): Effect of c…

2005

Investigations into the compositional heterogeneity of ethylene/1-hexene copolymers obtained with various zirconocene/MAO catalysts, either homogeneous or supported on inorganic carriers such as a complex of magnesium chloride with tetrahydrofuran or methyl alcohol, were conducted. The dependence between metallocene structure, as well as catalyst immobilization, and the compositional heterogeneity of the related products was investigated. It was found that the heterogeneity of copolymers is determined by the metallocene catalyst structure. The amount of peaks on the DSC thermograms of copolymers and their division increase with the increase of bulkiness of the ligand in the catalytic system…

compositional heterogeneitysupportcopolymersstructuremetallocene catalystThermochimica Acta
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Data from: Phylogenomics of Lophotrochozoa with consideration of systematic error

2016

Phylogenomic studies have improved understanding of deep metazoan phylogeny and show promise for resolving incongruences among analyses based on limited numbers of loci. One region of the animal tree that has been especially difficult to resolve, even with phylogenomic approaches, is relationships within Lophotrochozoa (the animal clade that includes molluscs, annelids, and flatworms among others). Lack of resolution in phylogenomic analyses could be due to insufficient phylogenetic signal, limitations in taxon and/or gene sampling, or systematic error. Here, we investigated why lophotrochozoan phylogeny has been such a difficult question to answer by identifying and reducing sources of sys…

Helobdella robustaGlycera dibranchiataMytilus edulisAnnelidaEntalina tetragonaLeptochiton asellusCerebratulus marginatusLoxosomella cf. viviparaGraptacme eboreaLineus longissimusmedicine and health careClymenella torquataRuditapes philippinarumNucella lapillusHaliotis rufescenslong branch attractionPlatyzoaBarentsia gracilisPriapulus caudatusLineus ruberAlitta virenssaturationProchaetoderma californicumPinctada fucataSchistosoma mansoniLife sciencesPolyzoaCephalothrix hongkongensisRhyssoplax olivaceusLoxosoma pectinaricolaPhascolosoma agassiziiAdineta vagaDrosophila melanogasterEntoproctaBugula neritinaPhoronis vancouverensisMedicineNovocrania anomalaVillosa lienosaDaphnia pulexSagitta sp.Pectinaria gouldiiSymbion americanusNuculana pernulaSepia esculentaEnucula tenuisSolemya velumLineus lacteusTubulanus polymorphus-StruckGnathostomula paradoxaBoccardia proboscideaMacellomenia schanderiLaevipilina hyalinaTubulanus polymorphus-HalanychBryozoaPomatoceros lamarckiiSepioteuthis lessonianaParanemertes peregrinaMalacobdella grossaHemithiris psittaceaLeptochiton rugatusTrochozoaBrachionus plicatilisSpathoderma clenchiLaqueus californicusPatella vulgataLottia giganteaCrepidula fornicataPhoronidaAplysia californicaGlottidia pyramidataPhoronis psammophilaSchmidtea mediterraneaAlexandromenia crassaBrachiopodaMegadasys sp.Octopus vulgarisCapitella teletaNeomenia carinatacompositional heterogeneityNemerteaPhenacolepas pulchellaGadila tolmieiMolluscaMacrodasys sp.Crassostrea gigasPedicellina cernuaTaenia pisiformisDosidicus gigasCephalothrix linearisSpiralia
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Data from: Phylogenomics of Lophotrochozoa with consideration of systematic error

2021

Phylogenomic studies have improved understanding of deep metazoan phylogeny and show promise for resolving incongruences among analyses based on limited numbers of loci. One region of the animal tree that has been especially difficult to resolve, even with phylogenomic approaches, is relationships within Lophotrochozoa (the animal clade that includes molluscs, annelids, and flatworms among others). Lack of resolution in phylogenomic analyses could be due to insufficient phylogenetic signal, limitations in taxon and/or gene sampling, or systematic error. Here, we investigated why lophotrochozoan phylogeny has been such a difficult question to answer by identifying and reducing sources of sys…

Helobdella robustaGlycera dibranchiataMytilus edulisAnnelidaEntalina tetragonaLeptochiton asellusCerebratulus marginatusLoxosomella cf. viviparaGraptacme eboreaLineus longissimusmedicine and health careClymenella torquataRuditapes philippinarumNucella lapillusHaliotis rufescenslong branch attractionPlatyzoaBarentsia gracilisPriapulus caudatusLineus ruberAlitta virenssaturationProchaetoderma californicumLife SciencesPinctada fucataSchistosoma mansoniPolyzoaCephalothrix hongkongensisRhyssoplax olivaceusLoxosoma pectinaricolaPhascolosoma agassiziiAdineta vagaDrosophila melanogasterEntoproctaBugula neritinaPhoronis vancouverensisMedicineNovocrania anomalaVillosa lienosaDaphnia pulexSagitta sp.Pectinaria gouldiiSymbion americanusNuculana pernulaSepia esculentaEnucula tenuisSolemya velumLineus lacteusTubulanus polymorphus-StruckGnathostomula paradoxaBoccardia proboscideaMacellomenia schanderiLaevipilina hyalinaTubulanus polymorphus-HalanychBryozoaPomatoceros lamarckiiSepioteuthis lessonianaParanemertes peregrinaMalacobdella grossaHemithiris psittaceaLeptochiton rugatusTrochozoaBrachionus plicatilisSpathoderma clenchiLaqueus californicusPatella vulgataLottia giganteaCrepidula fornicataPhoronidaAplysia californicaGlottidia pyramidataPhoronis psammophilaSchmidtea mediterraneaAlexandromenia crassaBrachiopodaMegadasys sp.Octopus vulgarisCapitella teletaNeomenia carinatacompositional heterogeneityNemerteaPhenacolepas pulchellaGadila tolmieiMolluscaMacrodasys sp.Crassostrea gigasPedicellina cernuaTaenia pisiformisDosidicus gigasCephalothrix linearisSpiralia
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