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In Systemic Functional Linguistics, meanings in semantic stratum could be realized by congruent/premetaphorical, metaphorical, or demetaphorical/post-metaphorical expressions in lexico-grammatical stratum. This paper, evidenced from the Corpus of Historical American English (COHA), explores the specific pathway from metaphorical expressions to post-metaphorical ones guided by principles of Context-first and AS IF and the principle of double functionality. The findings show that grammatical postmetaphorization is mainly realized by post-metaphor of ideation and that of modality. The former finds its expressions from common nouns to proper nouns (e.g. from security to Security), or from uncountable nouns to countable nouns (e.g. from security to securities), and the latter is evidenced by expressions shifting from explicit objective orientation to its explicit subjective counterpart (e.g. from it is possible that to it might be possible that), or by modal probability of I think type shifting from clausal initial position to clausal medial or final position (e.g. I think in the medial or final position of the clause).

Ionic liquid (IL)-modified UiO-66-NH2 composite was prepared and used as sorbent of dispersed solid-phase extraction (dSPE) for extracting trace benzoylurea insecticides (BUs) from complex environmental matrices. The IL in framework endowed the prepared material had electropositive characteristics, which can produce interaction with electron rich guest molecules, such as BUs. The high thermal and chemical stability of UiO-66-NH2/IL enabled it to be reused for 16 times without significant reduction in adsorption performance. Due to the multiple forces including π-π, hydrogen bonding, and fluorine-fluorine interaction, UiO-66-NH2/IL showed good adsorption performance, short adsorption time (20 s) and rapid desorption ability (60 s) for BUs. Under the optimal conditions, the method exhibited wide linear range (0.02–500 ng mL-1) with correlation coefficient (R2) not worse than 0.9928, high enrichment factor (252–300), and low detection limit (0.005–0.4 ng mL-1). The dispersed solid phase extraction coupling with high-performance liquid chromatography-diode array detector (dSPE-HPLC-DAD) was successfully used to detection of BUs in real environmental samples and satisfactory recoveries were obtained (80.5%±2.4–118%±3.2). The results indicated that UiO-66-NH2/IL composite can be a potential sorbent for the preconcentration of trace insecticides in environmental samples. [ABSTRACT FROM AUTHOR]

English elemental ordering in a non-canonical word order incorporates preposing, postposing and elemental reversal. This paper intends to explore how these types of elemental ordering are distributed during the last two centuries by employing the Corpus of Historical American English or COHA. The findings demonstrate that preposing has been increasing apparently but still in its inceptive phase; postposing, subsuming existential there and presentational there, generally keeps plateauing with existential there dominating presentational there; and elemental reversal experiences a trend of gradual decreasing, which is attributed to the dominance in occurrences of passive with a by phrase construction over those of inversion. This research provides us with a corpus linguistic insight of exploring elemental ordering, which distinguishes itself from other researches focusing on information status. [ABSTRACT FROM AUTHOR]