Precise synthesis of graphene by chemical vapor deposition.

Graphene, a typical representative of the family of two-dimensional (2D) materials, possesses a series of phenomenal physical properties. To date, numerous inspiring discoveries have been made on its structures, properties, characterization, synthesis, transfer and applications. The real practical applications of this magic material indeed require large-scale synthesis and precise control over its structures, such as size, crystallinity, layer number, stacking order, edge type and contamination levels.

Putrescine regulates stomatal opening of cucumber leaves under salt stress via the HO-mediated signaling pathway.

The stomatal aperture is imperative for photosynthesis in higher plants. The function of polyamines (PAs) in stomatal regulation under a stressful environment has not been fully determined. In this study, we demonstrated the mechanism by which putrescine (Put) regulates stomatal changes in cucumber leaves under salt stress.

Magnesium sulfate reduces postoperative pain in women with cesarean section: A meta-analysis of randomized controlled trials.

Objectives: The use of magnesium sulfate (MgSO ) as an adjunct in different anesthetic regimens for cesarean section (CS) delivery often reports conflicting results. This study aimed to review the effectiveness of MgSO on improving postoperative analgesia after CS systematically.

Methods: PubMed, Embase, and the Cochrane library were searched for randomized controlled trials (RCTs) published from inception to February 2020.