In this study, five microcrystalline cellulose (MCC) grades were physically characterized and their extrusion-spheronization behaviours were characterized in terms of water requirements and pellet shape profiles. It was found that the MCC grades differed significantly in the physical properties investigated. Physical properties of MCC were found to influence the water requirement for extrusion-...

The ZK61 alloy rods with different grain sizes and crystallographic texture were successfully fabricated by cyclic extrusion and compression (CEC). Their room-temperature tension & compression yield strength displayed a significant dependence on grain size and texture, essentially attributed to {10-12} twinning. The texture variations were characterized by the angle θ between the c-axis of ...

To preserve epithelial barrier function, dying cells are squeezed out of an epithelium by "apoptotic cell extrusion." Specifically, a cell destined for apoptosis signals its live neighboring epithelial cells to form and contract a ring of actin and myosin II that squeezes the dying cell out of the epithelial sheet. Although most apoptotic cells extrude apically, we find that some exit basally. ...

This paper reports on an experimental and finite element analysis (FEA) of the cold extrusion of high-grade (AA1100) aluminium. The influence of die angle, reduction ratio and die land on the extrusion force during the extrusion process was investigated. A forward extrusion die was designed and manufactured for the purpose of the experimental research. Interchangeable elements of the extrusion ...

Anisotropy caused by flow-induced fiber orientation of discontinuous fibers within the extrudate in Extrusion Deposition Additive Manufacturing (EDAM) process gives rise to anisotropic shrinkage printed parts and thereby, final part deformations. Three states, described second-order tensor, were investigated determine their influence upon geometry. Two material systems including a short glass f...

We present a means of extracting lava dome extrusion rates from data provided by the Thematic Mapper and Enhanced Thematic Mapper Plus instruments flown on the Landsat satellites. Extrusion rates derived from the Landsat data for Santiaguito dome complex (Guatemala) during November 1987 and January 2000 of 0.72€0.08 and 0.48€0.09 m3 s–1 compare favorably with ground-based estimates of 0.63€0.28...

This paper describes a variation to the traditional intrusion detection approach motivated by longstanding challenges and recent trends in information security. Intrusion detection systems have historically focused on the protection of local resources by identifying signs of malicious activity that may help administrators prevent a break-in and limit its effects. Outbound intrusion detection fo...

Dental trauma is more common in young patients and its sequelae may impair the establishment and accomplishment of an adequate treatment plan. This paper reports a case of complicated crown-root fracture in a young adult that was treated using adhesive tooth fragment reattachment and orthodontic root extrusion. Considering the time elapsed to follow up, the fracture extension, the amount of rem...

In our previous paper [Watano S. et al., J. Powder Technology Japan, 37, 362-370 (2000)], a novel compaction tester was developed to quantitatively evaluate the water dispersion condition of a wet kneaded mass prepared by a paddle type kneader. It has been demonstrated that the physical properties of pellets prepared by extrusion granulation after the kneading can be well predicted by the press...

Traditionally, the cold extrusion die is of flat-faced shape. The dead metal zone causes high shear friction resulting in short die life. To lengthen the die life, the geometry of the die can be optimised. In this paper, the die geometry which is a free form surface, is created based on the user selected die inlet and outlet profiles. Upper-bound theorem in plasticity and optimisation algorithm...