Cell walls are important features of plant cells that perform a number of essential functions, including providing shape to the many different cell types needed to form the tissues and organs of a plant. Forming the interface between adjacent cells, plant cell walls often play important roles in intercellular communication. Because of their surface location, plant cell walls play an important r...

I was my seventh consecutive night on duty, and it seemed by now that I could give the 11:00 p.m . report as well as the nurse who was going off. It was usually a busy intensive care unit, but for some time the patients had been fairly stable and the census low. So my interest was piqued when she said we had a new patient. Mark, 25 years old, had been thrown from his motorcycle earlier that eve...

Plant cell wall (CW) polysaccharides are responsible for the mechanical strength and growth of plant cells; however, the high-resolution structure and dynamics of the CW polysaccharides are still poorly understood because of the insoluble nature of these molecules. Here, we use 2D and 3D magic-angle-spinning (MAS) solid-state NMR (SSNMR) to investigate the structural role of pectins in the plan...

Webs of domain walls are constructed as 1/4 BPS states in d = 4, N = 2 supersymmetric U(NC) gauge theories with NF hypermultiplets in the fundamental representation. Web of walls can contain any numbers of external legs and loops like (p, q) string/5-brane webs. We find the moduli space M of a 1/4 BPS equation for wall webs to be the complex Grassmann manifold. When moduli spaces of 1/2 BPS sta...

Turbulent flows near walls have been the focus of intense study since their first description by Ludwig Prandtl over 100 years ago. They are critical in determining the drag and lift of an aircraft wing for example. Key challenges are to understand the physical mechanisms causing the transition from smooth, laminar flow to turbulent flow and how the turbulence is then maintained. Recent direct ...

Food habits of the tuatara (Sphenodon punctatus) on Stephens Island, in north-western Cook Strait, were studied by field observations and faecal analysis. The tuatara is a selective predator, feeding on a wide range of small animals, mainly large insects. Its diet shows seasonal changes and habitat differences, related to local conditions: the coastal broadleaf forest habitat, which predominate...

A network can be loosely defined as a structure linking together individual and organizational actors with shared goals or values, though often not a shared geography. A large body of literature highlights the important interaction between knowledge and networks. Interest in the impact of networking on knowledge translation and exchange, diffusion of innovations, knowledge management, and organ...