Conventional and Clumped Isotopes in Ecological Research

Clumped distribution patterns in goldenrod aphids: genetic and ecological mechanisms

1. The aphids Uroleucon tissoti and U. nigrotuberculatum both exhibit significantly aggregated distribution patterns across clumps of their common host plant Solidago altissima, the tall goldenrod. However, U. nigrotuberculatum is significantly more aggregated than is U.tissoti. We tested the hypothesis that goldenrod genotype-by-U. tissoti genotype interactions for aphid performance characters...

the investigation of research articles in applied linguistics: convergence and divergence in iranian elt context

چکیده ندارد.

: metadiscourse in introduction sections of applied linguistics and physics research articles: exploring variation in frequency and type

abstract in written mode of language, metadiscourse markers are used commonly to help writers in general and academic writers in particular to produce coherent and professional texts. the purpose of the present study was to compare introduction sections of applied linguistics and physics articles regarding their use of interactive and interactional metadiscourse markers based on the model pro...

Dolomitization processes in hydrocarbon reservoirs: insight from geothermometry using clumped isotopes

Clumped isotopes geothermometry was applied to two dolomitic hydrocarbon reservoirs. Results indicate that late burial dolomitization occurred at ~110°C in the Albian Pinda dolostone (offshore Angola) and ~90°C in the Mano-Meillon dolostone (Aquitaine Basin, France), and did not continue on during subsequent burial/thermal evolution to present-day conditions (150160°C). This study illustrates t...

Nitrogen Isotopes in Paleoclimate Research