Powder on Demand

On McDougall's Disinfecting Powder

On the 14th July were admitted into the jail hospital fourteen men, victims of an accident at a brick-kiln, by which burns of a most severe nature were inflicted. Many of these men had complete desquamation of the greater part of the cuticle of the legs and arms?the skin, equal in some cases to one-fourth of the entire surface, being destroyed. Of these men seven died from their wounds. My obje...

Powder crystallography on macromolecules.

Following the seminal work of Von Dreele, powder X-ray diffraction studies on proteins are being established as a valuable complementary technique to single-crystal measurements. A wide range of small proteins have been found to give synchrotron powder diffraction profiles where the peak widths are essentially limited only by the instrumental resolution. The rich information contained in these ...

Fresh powder on Waddington's slopes.

The Keystone Symposium on Stem Cell Differentiation and Dedifferentiation attracted nearly 500 participants affiliated with academia, the biotechnology industry, scientific publishing and clinical practice. This broad group examined current advances in stem-cell biology, with a particular focus on induced pluripotent stem cells, and discussed both their potential and limitations in therapeutic ...

On a Powder Consolidation Problem

The problem of the consolidation of an aerated fine powder under gravity is considered. The industrial relevance of the problem is discussed and a mathematical model is introduced. The mathematical structure is that of a coupled system for three unknowns, pressure, stress, and height of the powder in the (axisymmetric) bunker containing it. The system itself consists of a parabolic PDE, an ODE,...

Effects of powder recycling on stainless steel powder and built material properties in metal powder bed fusion processes