Introduction: Episiotomy is a surgical incision made in the perineum to enlarge it. Perineal pain is the most common complaint of mothers after episiotomy. Chamomile extract has been proposed as a sedative in traditional medicine. This study was conducted to assess the effect of chamomile cream on the pain after episiotomy. Methods: This triple blind clinical trial was performed on 114 eligible...

Based on Weitzenböck’s theorem and Nagata’s counterexample for Hilbert’s fourteenth problem we construct two finitely generated invariant rings R,S ⊂ K[x1, x2, . . . , xn] s.t. the intersection R ∩ S is not finitely generated as a K-algebra.

We generalize [3, Lemma 2.2] and [4, Proposition 2.3] and deduce a positive result on Hilbert’s fourteenth problem. Further, we give a relatively transparent and elementary proof of [3, Theorem 1.1].

Evaluation of search engines is a critical topic in the field of information retrieval. Doing evaluation well allows researchers to quickly and efficiently understand if their new algorithms are a valuable contribution or if they need to go back to the drawing board. The modern methods used for evaluation developed by organizations such as TREC in the US have their origins in research that star...