The causal relationship between ankylosing spondylitis and the risk of ovarian cancer.

Objective: The aim of this study was to investigate the potential causal relationship between ankylosing spondylitis (AS) and ovarian cancer.

Methods: We conducted analyses utilizing publicly available pooled statistical data sets from genomewide association studies (GWAS) involving individuals of European ancestry. Our objective was to identify single nucleotide polymorphisms (SNPs) significantly associated with AS and use them as instrumental variables to assess the causal relationship between AS and ovarian cancer.

Investigating the effects of polymer plugging mechanism of liquid production decrease and improvement by the cross-linked gel performance.

Polymer flooding, as the most successful and well-known chemical EOR method was broadly applied around the world. Mostly, contrasted with Waterflooding, the production rate decrease during polymer flooding is smaller based on field application. Nevertheless, the production liquid rate decreased critically in the middle phase to late phase due to plugging, which could lead the way to poor flooding performance and fewer cumulative oil.