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PURPOSE The aim of this study was to determine the impact of repeated first trimester mifepristone-induced medical abortions on the risk of preterm birth in a subsequent pregnancy. METHODS This is a pregnancy-based cohort study. Clinical data were collected from seven public hospitals in Chengdu, China from January 2006 to December 2009. Pregnant women(More)
The main purpose of this paper is to prove that the extensions of a nilpotent block algebra and its Glauberman correspondent block algebra are Morita equivalent under an additional group-theoretic condition (see Theorem 1.6); in particular, Harris and Linckelman's theorem and Koshitani and Michler's theorem are covered (see Theorems 7.5 and 7.6). The(More)
Straws of four ornamental flowers (carnation, rose, lily, and violet) were added into denitrification biofilters using gravel as matrix through vertically installed perforated polyvinylchloride pipes to provide organic carbon for the treatment of nitrate-contaminated wastewater operating in batch mode. Removal efficiencies of nitrate and phosphate, as well(More)
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