3 research outputs found
Additional file 2: of Understanding variations in patient screening and recruitment in a multicentre pilot randomised controlled trial: a vignette-based study
Referral letters for evaluation of screening processes. (DOC 104Â kb
Additional file 1: of Understanding variations in patient screening and recruitment in a multicentre pilot randomised controlled trial: a vignette-based study
Letter of invitation to take part and instructions for screeners. (DOC 28Â kb
Synthesis of boron nitride nanotubes by boron ink annealing
Ball-milling and annealing is one effective method for the mass production of boron nitride nanotubes (BNNTs). We report that the method has been modified to a boron (B) ink annealing method. In this new process, the nanosize ball-milled B particles are mixed with metal nitrate in ethanol to form an ink-like solution, and then the ink is annealed in nitrogen-containing gas to form nanotubes. The new method greatly enhances the yield of BNNTs, giving a higher density of nanotubes. These improvements are caused by the addition of metal nitrate and ethanol, both of which can strongly boost the nitriding reaction, as revealed by thermogravimetric analysis. The size and structure of BNNTs can be controlled by varying the annealing conditions. This high-yield production of BNNTs in large quantities enables the large-scale application of BNNTs