Being a biocompatible metal with similar mechanical properties as bones, magnesium bears both biodegradability suitable for bone substitution and chemical reactivity detrimental in bio-ambiences. To benefit its biomaterial applications, we developed Mg-2.0Zn-0.5Zr-3.0Gd (wt%) alloy through hot extrusion and tailored its biodegradability by just varying the extrusion temperatures during alloy pr...

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...

A base-promoted formal arylation of benzo[d]oxazoles with acyl chloride was achieved in moderate to good yields. This reaction was triggered by the N-acylation of oxazole to form an iminium intermediate. Then, the addition of H2O to the iminium formed the hemiacetal intermediate. After the sequential ring-opening, extrusion of CO, the ring closure, the dehydration delivered the formal arylation...

The electronic spectrum o f Cp2TiSs shows a long-wavelength absorption at Amax = 492 nm which is assigned to the lowest-energy S52~ ^ T i IV ligand-to-metal charge transfer (LM CT) transition. The photolysis o f the complex in CH2CI2 leads to the formation o f Cp2TiCl2 and elemental sulfur. It is suggested that LM CT excitation initiates a reductive elimination with the extrusion o f S5 while t...

8.7.6.1 Electromigration in Encapsulated Metal Line 52 8.7.6.2 Basic Electromigration Characteristics 53 8.7.6.3 Balancing Electron Wind with Stress Gradient 55 8.7.6.4 No-Voiding Condition for Encapsulated Line 56 8.7.6.5 Saturated Void Volume (SVV) 57 8.7.6.6 Experimental Determination of Z ; DaðT T0Þ; B; and D 58 8.7.6.7 No-Extrusion Condition for Encapsulated Line 59 8.7.6.8 The Immortal In...

Higher plants possess a multitude of Multiple Drug Resistance (MDR) transporter homologs that group into three distinct and ubiquitous families-the ATP-Binding Cassette (ABC) superfamily, the Major Facilitator Superfamily (MFS), and the Multidrug And Toxic compound Extrusion (MATE) family. As in other organisms, such as fungi, mammals, and bacteria, MDR transporters make a primary contribution ...

Extrusion is one of the widest used and the most basic processes of plastic forming, and the metal flow in extrusion is affected by many factors, such as friction, die shape, billet temperature and so on. Among these factors, friction is the key boundary condition to determine the property of the extruded products. In this paper research and measurements of velocity fields and impact of frictio...

The general dental practitioner must consider orthodontic extrusion of a tooth when a subgingival defect, such as, crown fracture occurs before prosthetic rehabilitation, especially in the aesthetic zone. Extrusion enables the root portion to be elevated which exposes sound tooth structure for placement of restorative margins. This case report describes the multidisciplinary management of a fra...